diff --git a/.circleci/config.yml b/.circleci/config.yml
index 323c500a6..22cd1910f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -28,7 +28,7 @@ jobs:
           - BUNDLE_GEMFILE=
 
       # テスト高速化(3min -> 2min)
-      - image: circleci/postgres:11.3-alpine-postgis-ram
+      - image: circleci/postgres:11.5-alpine-postgis-ram
 
       # circleci/redisにしても早くならなかった
       - image: redis:5.0.4-alpine