diff --git a/adapter-base-quarkus/pom.xml b/adapter-base-quarkus/pom.xml
index 669cf3371ee..ebea43e98a8 100644
--- a/adapter-base-quarkus/pom.xml
+++ b/adapter-base-quarkus/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
   <artifactId>hono-adapter-base-quarkus</artifactId>
diff --git a/adapter-base-spring/pom.xml b/adapter-base-spring/pom.xml
index 23f0b912fed..79af82b90d6 100644
--- a/adapter-base-spring/pom.xml
+++ b/adapter-base-spring/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
   <artifactId>hono-adapter-base-spring</artifactId>
diff --git a/adapter-base/pom.xml b/adapter-base/pom.xml
index bcaf52ab1fe..782d8612938 100644
--- a/adapter-base/pom.xml
+++ b/adapter-base/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
   <artifactId>hono-adapter-base</artifactId>
diff --git a/adapters/amqp-vertx-base/pom.xml b/adapters/amqp-vertx-base/pom.xml
index 2927b62ae04..c677ec6d018 100644
--- a/adapters/amqp-vertx-base/pom.xml
+++ b/adapters/amqp-vertx-base/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-amqp-vertx-base</artifactId>
   <name>Hono AMQP Adapter base</name>
diff --git a/adapters/amqp-vertx-quarkus/pom.xml b/adapters/amqp-vertx-quarkus/pom.xml
index 224693f7808..c289990b41d 100644
--- a/adapters/amqp-vertx-quarkus/pom.xml
+++ b/adapters/amqp-vertx-quarkus/pom.xml
@@ -18,7 +18,7 @@
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters-quarkus</artifactId>
     <relativePath>../base-quarkus</relativePath>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-amqp-vertx-quarkus</artifactId>
   <name>Hono AMQP Adapter (Quarkus)</name>
diff --git a/adapters/amqp-vertx/pom.xml b/adapters/amqp-vertx/pom.xml
index 0c81474e0f3..489c0312c43 100644
--- a/adapters/amqp-vertx/pom.xml
+++ b/adapters/amqp-vertx/pom.xml
@@ -18,7 +18,7 @@
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters-spring</artifactId>
     <relativePath>../base-spring</relativePath>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-amqp-vertx</artifactId>
   <name>Hono AMQP Adapter</name>
diff --git a/adapters/base-quarkus/pom.xml b/adapters/base-quarkus/pom.xml
index 30b7f5acbed..29dea1690f2 100644
--- a/adapters/base-quarkus/pom.xml
+++ b/adapters/base-quarkus/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <artifactId>hono-adapters</artifactId>
     <groupId>org.eclipse.hono</groupId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <artifactId>hono-adapters-quarkus</artifactId>
diff --git a/adapters/base-spring/pom.xml b/adapters/base-spring/pom.xml
index 2ba19fef6ac..3f0aadc120b 100644
--- a/adapters/base-spring/pom.xml
+++ b/adapters/base-spring/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <artifactId>hono-adapters</artifactId>
     <groupId>org.eclipse.hono</groupId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <packaging>pom</packaging>
diff --git a/adapters/coap-vertx-base/pom.xml b/adapters/coap-vertx-base/pom.xml
index 3181ed59099..5dd8a9a23c2 100644
--- a/adapters/coap-vertx-base/pom.xml
+++ b/adapters/coap-vertx-base/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-coap-vertx-base</artifactId>
   <name>Hono CoAP Adapter base</name>
diff --git a/adapters/coap-vertx-quarkus/pom.xml b/adapters/coap-vertx-quarkus/pom.xml
index 48e8dd8d697..6a931b9b7ee 100644
--- a/adapters/coap-vertx-quarkus/pom.xml
+++ b/adapters/coap-vertx-quarkus/pom.xml
@@ -18,7 +18,7 @@
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters-quarkus</artifactId>
     <relativePath>../base-quarkus</relativePath>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-coap-vertx-quarkus</artifactId>
   <name>Hono CoAP Adapter (Quarkus)</name>
diff --git a/adapters/coap-vertx/pom.xml b/adapters/coap-vertx/pom.xml
index b81e8e52889..c65b1d91713 100644
--- a/adapters/coap-vertx/pom.xml
+++ b/adapters/coap-vertx/pom.xml
@@ -18,7 +18,7 @@
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters-spring</artifactId>
     <relativePath>../base-spring</relativePath>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-coap-vertx</artifactId>
   <name>Hono CoAP Adapter</name>
diff --git a/adapters/http-vertx-base/pom.xml b/adapters/http-vertx-base/pom.xml
index 870aac3ec08..dd00fa5fd82 100644
--- a/adapters/http-vertx-base/pom.xml
+++ b/adapters/http-vertx-base/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-http-vertx-base</artifactId>
   <name>Hono HTTP Adapter base</name>
diff --git a/adapters/http-vertx-quarkus/pom.xml b/adapters/http-vertx-quarkus/pom.xml
index f6e12c5f792..3e7deeecb9f 100644
--- a/adapters/http-vertx-quarkus/pom.xml
+++ b/adapters/http-vertx-quarkus/pom.xml
@@ -18,7 +18,7 @@
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters-quarkus</artifactId>
     <relativePath>../base-quarkus</relativePath>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-http-vertx-quarkus</artifactId>
   <name>Hono HTTP Adapter (Quarkus)</name>
diff --git a/adapters/http-vertx/pom.xml b/adapters/http-vertx/pom.xml
index 9a5420d5c2d..9d2e3e86d8b 100644
--- a/adapters/http-vertx/pom.xml
+++ b/adapters/http-vertx/pom.xml
@@ -18,7 +18,7 @@
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters-spring</artifactId>
     <relativePath>../base-spring</relativePath>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-http-vertx</artifactId>
   <name>Hono HTTP Adapter</name>
diff --git a/adapters/kura/pom.xml b/adapters/kura/pom.xml
index 7a2043920a2..29566c048d3 100644
--- a/adapters/kura/pom.xml
+++ b/adapters/kura/pom.xml
@@ -18,7 +18,7 @@
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters-spring</artifactId>
     <relativePath>../base-spring</relativePath>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-kura</artifactId>
   <name>Hono Kura Adapter</name>
diff --git a/adapters/lora-vertx-base/pom.xml b/adapters/lora-vertx-base/pom.xml
index c7bfdc84121..95546591406 100644
--- a/adapters/lora-vertx-base/pom.xml
+++ b/adapters/lora-vertx-base/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-lora-vertx-base</artifactId>
   <name>Hono LoRa Adapter</name>
diff --git a/adapters/lora-vertx-quarkus/pom.xml b/adapters/lora-vertx-quarkus/pom.xml
index 590829a2e35..a4b1b43d25f 100644
--- a/adapters/lora-vertx-quarkus/pom.xml
+++ b/adapters/lora-vertx-quarkus/pom.xml
@@ -18,7 +18,7 @@
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters-quarkus</artifactId>
     <relativePath>../base-quarkus</relativePath>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-lora-vertx-quarkus</artifactId>
   <name>Hono Lora Adapter (Quarkus)</name>
diff --git a/adapters/lora-vertx/pom.xml b/adapters/lora-vertx/pom.xml
index 9ff17264bd6..529d52a09b3 100644
--- a/adapters/lora-vertx/pom.xml
+++ b/adapters/lora-vertx/pom.xml
@@ -18,7 +18,7 @@
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters-spring</artifactId>
     <relativePath>../base-spring</relativePath>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-lora-vertx</artifactId>
   <name>Hono LoRa Adapter</name>
diff --git a/adapters/mqtt-vertx-base/pom.xml b/adapters/mqtt-vertx-base/pom.xml
index 8066e00a97d..bdf73177e81 100644
--- a/adapters/mqtt-vertx-base/pom.xml
+++ b/adapters/mqtt-vertx-base/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-mqtt-vertx-base</artifactId>
   <name>Hono MQTT Adapter base</name>
diff --git a/adapters/mqtt-vertx-quarkus/pom.xml b/adapters/mqtt-vertx-quarkus/pom.xml
index 0deb20b02a3..a04fadd1a8b 100644
--- a/adapters/mqtt-vertx-quarkus/pom.xml
+++ b/adapters/mqtt-vertx-quarkus/pom.xml
@@ -19,7 +19,7 @@
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters-quarkus</artifactId>
     <relativePath>../base-quarkus</relativePath>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-mqtt-vertx-quarkus</artifactId>
   <name>Hono MQTT Adapter (Quarkus)</name>
diff --git a/adapters/mqtt-vertx/pom.xml b/adapters/mqtt-vertx/pom.xml
index 49ae682f252..d2800342932 100644
--- a/adapters/mqtt-vertx/pom.xml
+++ b/adapters/mqtt-vertx/pom.xml
@@ -18,7 +18,7 @@
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters-spring</artifactId>
     <relativePath>../base-spring</relativePath>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-mqtt-vertx</artifactId>
   <name>Hono MQTT Adapter</name>
diff --git a/adapters/pom.xml b/adapters/pom.xml
index a3ff8051cbc..5d643cfb7b6 100644
--- a/adapters/pom.xml
+++ b/adapters/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
 
diff --git a/adapters/sigfox-vertx/pom.xml b/adapters/sigfox-vertx/pom.xml
index 9a8575d4bdc..ee82ad2bb8e 100644
--- a/adapters/sigfox-vertx/pom.xml
+++ b/adapters/sigfox-vertx/pom.xml
@@ -18,7 +18,7 @@
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-adapters-spring</artifactId>
     <relativePath>../base-spring</relativePath>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-adapter-sigfox-vertx</artifactId>
   <name>Hono Sigfox Adapter</name>
diff --git a/bom/pom.xml b/bom/pom.xml
index 823cc376eb8..4423b2e66ab 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-parent</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>hono-bom</artifactId>
diff --git a/cli/pom.xml b/cli/pom.xml
index 41ccad0d9c3..ac9157a8e88 100644
--- a/cli/pom.xml
+++ b/cli/pom.xml
@@ -19,7 +19,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
 
diff --git a/client-device-connection-infinispan-quarkus/pom.xml b/client-device-connection-infinispan-quarkus/pom.xml
index 72dab53073d..8c1d2a2f4ea 100644
--- a/client-device-connection-infinispan-quarkus/pom.xml
+++ b/client-device-connection-infinispan-quarkus/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
   <artifactId>client-device-connection-infinispan-quarkus</artifactId>
diff --git a/client-device-connection-infinispan/pom.xml b/client-device-connection-infinispan/pom.xml
index e9a62eac057..4a8660b3223 100644
--- a/client-device-connection-infinispan/pom.xml
+++ b/client-device-connection-infinispan/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
   <artifactId>client-device-connection-infinispan</artifactId>
diff --git a/client/pom.xml b/client/pom.xml
index 8e7e8aae4ee..029e9be8596 100644
--- a/client/pom.xml
+++ b/client/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
 
diff --git a/clients/adapter-amqp/pom.xml b/clients/adapter-amqp/pom.xml
index 5345da37fea..cf29bd799a4 100644
--- a/clients/adapter-amqp/pom.xml
+++ b/clients/adapter-amqp/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-clients-parent</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-client-adapter-amqp</artifactId>
 
diff --git a/clients/adapter-kafka/pom.xml b/clients/adapter-kafka/pom.xml
index 16a719ecad4..8e226a96371 100644
--- a/clients/adapter-kafka/pom.xml
+++ b/clients/adapter-kafka/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-clients-parent</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-client-adapter-kafka</artifactId>
 
diff --git a/clients/adapter/pom.xml b/clients/adapter/pom.xml
index 11be6b48b9d..25a04eb858d 100644
--- a/clients/adapter/pom.xml
+++ b/clients/adapter/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-clients-parent</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-client-adapter</artifactId>
 
diff --git a/clients/amqp-common/pom.xml b/clients/amqp-common/pom.xml
index 342ccd16f97..03a0e5a1ffb 100644
--- a/clients/amqp-common/pom.xml
+++ b/clients/amqp-common/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-clients-parent</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
     <artifactId>hono-client-amqp-common</artifactId>
 
diff --git a/clients/application-amqp/pom.xml b/clients/application-amqp/pom.xml
index 9b693ac8cb1..b7fdfac41b0 100644
--- a/clients/application-amqp/pom.xml
+++ b/clients/application-amqp/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-clients-parent</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-client-application-amqp</artifactId>
 
diff --git a/clients/application-kafka/pom.xml b/clients/application-kafka/pom.xml
index 562eae426ee..d9fe6ca8dd2 100644
--- a/clients/application-kafka/pom.xml
+++ b/clients/application-kafka/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-clients-parent</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-client-application-kafka</artifactId>
 
diff --git a/clients/application/pom.xml b/clients/application/pom.xml
index 54fbc7446ab..b7bce8cf0b2 100644
--- a/clients/application/pom.xml
+++ b/clients/application/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-clients-parent</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-client-application</artifactId>
 
diff --git a/clients/client-common/pom.xml b/clients/client-common/pom.xml
index 143ace914ab..4b96ec08b12 100644
--- a/clients/client-common/pom.xml
+++ b/clients/client-common/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-clients-parent</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-client-common</artifactId>
 
diff --git a/clients/kafka-common/pom.xml b/clients/kafka-common/pom.xml
index 25657d95a0f..6fbd2d16d98 100644
--- a/clients/kafka-common/pom.xml
+++ b/clients/kafka-common/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-clients-parent</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-client-kafka-common</artifactId>
 
diff --git a/clients/pom.xml b/clients/pom.xml
index 8bc34f0d2fe..3c282a161ec 100644
--- a/clients/pom.xml
+++ b/clients/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
 
diff --git a/core/pom.xml b/core/pom.xml
index ed617ce53e0..eee2f37ed3a 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
 
diff --git a/demo-certs/pom.xml b/demo-certs/pom.xml
index e93b95dfa81..8b079da4cb7 100644
--- a/demo-certs/pom.xml
+++ b/demo-certs/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-parent</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-demo-certs</artifactId>
 
diff --git a/deploy/pom.xml b/deploy/pom.xml
index d5338afd4f4..6fcead53dd3 100644
--- a/deploy/pom.xml
+++ b/deploy/pom.xml
@@ -19,7 +19,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
 
diff --git a/examples/hono-client-examples/pom.xml b/examples/hono-client-examples/pom.xml
index 11a04f35979..bb07de9f68e 100644
--- a/examples/hono-client-examples/pom.xml
+++ b/examples/hono-client-examples/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-example</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/examples/pom.xml b/examples/pom.xml
index 439bf48f1ea..8cbae840449 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
 
diff --git a/examples/protocol-gateway-example/pom.xml b/examples/protocol-gateway-example/pom.xml
index 0e793241ca4..44bbbeba258 100644
--- a/examples/protocol-gateway-example/pom.xml
+++ b/examples/protocol-gateway-example/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-example</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/legal/pom.xml b/legal/pom.xml
index 73fff9f9e96..0200a23f3a3 100644
--- a/legal/pom.xml
+++ b/legal/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-parent</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>hono-legal</artifactId>
   <name>Legal Documents</name>
diff --git a/pom.xml b/pom.xml
index 9c2f5bc2d93..b79daae77fe 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,7 +17,7 @@
 
   <groupId>org.eclipse.hono</groupId>
   <artifactId>hono-parent</artifactId>
-  <version>1.8.0</version>
+  <version>1.9.0-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>Hono</name>
diff --git a/service-base-quarkus/pom.xml b/service-base-quarkus/pom.xml
index 7407bbe24c3..70184d5c03d 100644
--- a/service-base-quarkus/pom.xml
+++ b/service-base-quarkus/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
   <artifactId>hono-service-base-quarkus</artifactId>
diff --git a/service-base-spring/pom.xml b/service-base-spring/pom.xml
index f87dae21fc2..37110ca6250 100644
--- a/service-base-spring/pom.xml
+++ b/service-base-spring/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
   <artifactId>hono-service-base-spring</artifactId>
diff --git a/service-base/pom.xml b/service-base/pom.xml
index 16b2ac9bc05..8b1ede1bf17 100644
--- a/service-base/pom.xml
+++ b/service-base/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
   <artifactId>hono-service-base</artifactId>
diff --git a/services/auth-base/pom.xml b/services/auth-base/pom.xml
index 80c17243149..d3b26ecc31c 100644
--- a/services/auth-base/pom.xml
+++ b/services/auth-base/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-services</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>..</relativePath>
   </parent>
   <artifactId>hono-service-auth-base</artifactId>
diff --git a/services/auth-quarkus/pom.xml b/services/auth-quarkus/pom.xml
index cdf8f74a235..af79c895d19 100644
--- a/services/auth-quarkus/pom.xml
+++ b/services/auth-quarkus/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-services-quarkus</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../base-quarkus</relativePath>
   </parent>
   <artifactId>hono-service-auth-quarkus</artifactId>
diff --git a/services/auth/pom.xml b/services/auth/pom.xml
index 2fea9ac5149..2dbde9d832a 100644
--- a/services/auth/pom.xml
+++ b/services/auth/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-services-spring</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../base-spring</relativePath>
   </parent>
   <artifactId>hono-service-auth</artifactId>
diff --git a/services/base-jdbc/pom.xml b/services/base-jdbc/pom.xml
index 400477d2710..dbc0e733270 100644
--- a/services/base-jdbc/pom.xml
+++ b/services/base-jdbc/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../../bom</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/services/base-quarkus/pom.xml b/services/base-quarkus/pom.xml
index 3d4c09e7d59..6c8ccef02b8 100644
--- a/services/base-quarkus/pom.xml
+++ b/services/base-quarkus/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <artifactId>hono-services</artifactId>
     <groupId>org.eclipse.hono</groupId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>..</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/services/base-spring/pom.xml b/services/base-spring/pom.xml
index 1411590e5a1..e1c1a25313c 100644
--- a/services/base-spring/pom.xml
+++ b/services/base-spring/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <artifactId>hono-services</artifactId>
     <groupId>org.eclipse.hono</groupId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>..</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/services/command-router-base/pom.xml b/services/command-router-base/pom.xml
index 990095245b2..feba6e4d704 100644
--- a/services/command-router-base/pom.xml
+++ b/services/command-router-base/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-services</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>..</relativePath>
   </parent>
   <artifactId>hono-service-command-router-base</artifactId>
diff --git a/services/command-router-quarkus/pom.xml b/services/command-router-quarkus/pom.xml
index a45a0325b85..aad84cbfb0a 100644
--- a/services/command-router-quarkus/pom.xml
+++ b/services/command-router-quarkus/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-services-quarkus</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../base-quarkus</relativePath>
   </parent>
   <artifactId>hono-service-command-router-quarkus</artifactId>
diff --git a/services/command-router/pom.xml b/services/command-router/pom.xml
index ffd1bf3041a..c5acaba3f47 100644
--- a/services/command-router/pom.xml
+++ b/services/command-router/pom.xml
@@ -17,7 +17,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xs
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-services-spring</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../base-spring</relativePath>
   </parent>
   <artifactId>hono-service-command-router</artifactId>
diff --git a/services/device-connection/pom.xml b/services/device-connection/pom.xml
index 020043ee52d..fb5e3faf429 100644
--- a/services/device-connection/pom.xml
+++ b/services/device-connection/pom.xml
@@ -17,7 +17,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xs
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-services-spring</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../base-spring</relativePath>
   </parent>
   <artifactId>hono-service-device-connection</artifactId>
diff --git a/services/device-registry-base/pom.xml b/services/device-registry-base/pom.xml
index 6273d6b91ad..304b966071b 100644
--- a/services/device-registry-base/pom.xml
+++ b/services/device-registry-base/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-services</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
diff --git a/services/device-registry-file/pom.xml b/services/device-registry-file/pom.xml
index d011d613976..3464aa14e42 100644
--- a/services/device-registry-file/pom.xml
+++ b/services/device-registry-file/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-services-spring</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../base-spring</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/services/device-registry-jdbc/pom.xml b/services/device-registry-jdbc/pom.xml
index 75fab9ea9f3..0366f70d457 100644
--- a/services/device-registry-jdbc/pom.xml
+++ b/services/device-registry-jdbc/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-services-spring</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../base-spring</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/services/device-registry-mongodb/pom.xml b/services/device-registry-mongodb/pom.xml
index 3bab20a2627..db22e188cd7 100644
--- a/services/device-registry-mongodb/pom.xml
+++ b/services/device-registry-mongodb/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-services-spring</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../base-spring</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/services/pom.xml b/services/pom.xml
index e76fdbdce5e..8a8a0d3203a 100644
--- a/services/pom.xml
+++ b/services/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
 
diff --git a/site/pom.xml b/site/pom.xml
index df0911280c6..4faf039c9f6 100644
--- a/site/pom.xml
+++ b/site/pom.xml
@@ -18,7 +18,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
 
diff --git a/test-utils/adapter-base-test-utils/pom.xml b/test-utils/adapter-base-test-utils/pom.xml
index 1a3b085bd42..d720c471777 100644
--- a/test-utils/adapter-base-test-utils/pom.xml
+++ b/test-utils/adapter-base-test-utils/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>test-utils</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>adapter-base-test-utils</artifactId>
 
diff --git a/test-utils/client-test-utils/pom.xml b/test-utils/client-test-utils/pom.xml
index c8a9b357693..4f6956f3484 100644
--- a/test-utils/client-test-utils/pom.xml
+++ b/test-utils/client-test-utils/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>test-utils</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>client-test-utils</artifactId>
 
diff --git a/test-utils/core-test-utils/pom.xml b/test-utils/core-test-utils/pom.xml
index fb66519542c..986b8a1a32b 100644
--- a/test-utils/core-test-utils/pom.xml
+++ b/test-utils/core-test-utils/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>test-utils</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>core-test-utils</artifactId>
 
diff --git a/test-utils/kafka-test-utils/pom.xml b/test-utils/kafka-test-utils/pom.xml
index 135e8b640ea..fb9fafb85fd 100644
--- a/test-utils/kafka-test-utils/pom.xml
+++ b/test-utils/kafka-test-utils/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>test-utils</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
   </parent>
   <artifactId>kafka-test-utils</artifactId>
 
diff --git a/test-utils/pom.xml b/test-utils/pom.xml
index a573aeefdf4..dd07ca77332 100644
--- a/test-utils/pom.xml
+++ b/test-utils/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <artifactId>hono-bom</artifactId>
     <groupId>org.eclipse.hono</groupId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
   <artifactId>test-utils</artifactId>
diff --git a/tests/pom.xml b/tests/pom.xml
index 65d53ac71eb..b600653fd22 100644
--- a/tests/pom.xml
+++ b/tests/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.eclipse.hono</groupId>
     <artifactId>hono-bom</artifactId>
-    <version>1.8.0</version>
+    <version>1.9.0-SNAPSHOT</version>
     <relativePath>../bom</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>