diff --git a/.github/workflows/test-ruby.yml b/.github/workflows/test-ruby.yml
index 07cb1d41f..b73f1e312 100644
--- a/.github/workflows/test-ruby.yml
+++ b/.github/workflows/test-ruby.yml
@@ -75,7 +75,7 @@ jobs:
 
     services:
       postgres:
-        image: postgres:14-alpine
+        image: postgres:15-alpine
         env:
           POSTGRES_PASSWORD: postgres
           POSTGRES_USER: postgres