diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e5664da68..7a61161ee 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -59,7 +59,7 @@ benchmark:
   variables:
     MIX_ENV: benchmark
   services:
-  - name: postgres:9.6
+  - name: postgres:9.6-alpine
     alias: postgres
     command: ["postgres", "-c", "fsync=off", "-c", "synchronous_commit=off", "-c", "full_page_writes=off"]
   script:
@@ -79,7 +79,7 @@ unit-testing:
     policy: pull
 
   services:
-  - name: postgres:13
+  - name: postgres:13-alpine
     alias: postgres
     command: ["postgres", "-c", "fsync=off", "-c", "synchronous_commit=off", "-c", "full_page_writes=off"]
   script:
@@ -101,7 +101,7 @@ unit-testing-erratic:
     policy: pull
 
   services:
-  - name: postgres:13
+  - name: postgres:13-alpine
     alias: postgres
     command: ["postgres", "-c", "fsync=off", "-c", "synchronous_commit=off", "-c", "full_page_writes=off"]
   script: