diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 928d4de..ff88df1 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -36,6 +36,10 @@ jobs:
           npx prisma generate
 
       - name: Run unit tests
+        env:
+          # API 유닛 테스트에서도 PrismaClient가 필요하므로,
+          # generate 단계와 동일한 더미 DATABASE_URL 을 사용한다.
+          DATABASE_URL: postgresql://example:example@localhost:5432/example
         run: |
           npm test