diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 7dfc387..6eaf835 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -5,7 +5,7 @@ jobs:
   test:
     services:
       postgres:
-        image: postgres:15
+        image: postgres:16
         ports: ["5432:5432"]
         env:
           POSTGRES_PASSWORD: password