diff --git a/docs/dev.md b/docs/dev.md
index 690a55c2..7238fee1 100644
--- a/docs/dev.md
+++ b/docs/dev.md
@@ -2,8 +2,8 @@
 
 ## Requirements
 
-- Ruby v3.1+
-- Node.js v20+
+- Ruby v3.2+
+- Node.js v22+
 - Python
 - Docker (Docker Compose)
 - [actionlint](https://github.com/rhysd/actionlint)
diff --git a/docs/requirements.md b/docs/requirements.md
index a9376b75..875de48b 100644
--- a/docs/requirements.md
+++ b/docs/requirements.md
@@ -2,13 +2,13 @@
 
 ## Runtime
 
-Ruby 3.1+ (tested with 3.1, 3.2 and 3.3)
+Ruby 3.2+ (tested with 3.2 and 3.3)
 
 ## Database
 
 - SQLite3
-- PostgreSQL (v16)
-- MySQL (v8)
+- PostgreSQL (v16+)
+- MySQL (v8+)
 
 You need a database to make the data persistent. See [Database](./emitters/database.md) for details.