diff --git a/.github/workflows/crystal.yml b/.github/workflows/crystal.yml
index 9365711..b4a76d6 100644
--- a/.github/workflows/crystal.yml
+++ b/.github/workflows/crystal.yml
@@ -54,7 +54,7 @@ jobs:
         run: crystal tool format --check
       - name: Run tests
         env:
-          DATABASE_URL: postgres://example:example@localhost:5432/example
+          DATABASE_URL: postgres://example:example@postgres:5432/example
         run: crystal spec
 
   docs: