diff --git a/tests/docker-compose.yaml b/tests/docker-compose.yaml
index 6c4d33d..ca46839 100644
--- a/tests/docker-compose.yaml
+++ b/tests/docker-compose.yaml
@@ -13,7 +13,7 @@ services:
     restart: always
 
   postgres-users:
-    image: postgres:9.4-alpine
+    image: postgres:9.4.24-alpine
     restart: on-failure
     command: >
       bash -c "createuser kong -d -h postgres -U postgres && createdb kong -U kong -h postgres"
@@ -26,7 +26,7 @@ services:
         max-size: 100m
 
   postgres:
-    image: "postgres:9.4"
+    image: postgres:9.4.24-alpine
     restart: always
     healthcheck:
       test: ["CMD", "pg_isready", "-U", "postgres"]