diff --git a/.changelog/485.feature.md b/.changelog/485.feature.md
new file mode 100644
index 00000000..fad4c657
--- /dev/null
+++ b/.changelog/485.feature.md
@@ -0,0 +1 @@
+Bump Oasis Core to 23.0.5
diff --git a/Makefile b/Makefile
index c1a683dc..21c63457 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 include common.mk
 
-OASIS_RELEASE := 23.0
+OASIS_RELEASE := 23.0.5
 ROSETTA_CLI_RELEASE := 0.10.3
 
 # Check which tool to use for downloading.
diff --git a/docker/Dockerfile b/docker/Dockerfile
index c2245b2d..a483ae75 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -13,7 +13,7 @@ FROM golang:1.21-bullseye AS build
 # Install prerequisites.
 RUN apt-get update && apt-get install -y bzip2 libseccomp-dev
 
-ARG CORE_BRANCH=v23.0
+ARG CORE_BRANCH=v23.0.5
 ARG CORE_GITHUB=https://github.com/oasisprotocol/oasis-core
 
 ARG GATEWAY_BRANCH=master