diff --git a/.github/workflows/rails-cd.yml b/.github/workflows/rails-cd.yml
index 5bfec1e..9e4917c 100644
--- a/.github/workflows/rails-cd.yml
+++ b/.github/workflows/rails-cd.yml
@@ -9,7 +9,7 @@ env:
   LOCATION: ${{ secrets.LOCATION }}
   AR_REPOSITORY_NAME: ${{ secrets.AR_REPOSITORY_NAME }}
   IMAGE: ${{ secrets.LOCATION }}-docker.pkg.dev/${{ secrets.GCP_PROJECT_ID }}/${{ secrets.AR_REPOSITORY_NAME }}/app:latest
-  CLOUD_SQL_INSTANCE_NAME: ${{ secrets.GCP_PROJECT_ID }}:${{ secrets.LOCATION }}:${{ secrets.CLOUD_SQL_INSTANCE_NAME }}
+  CLOUD_SQL_INSTANCE_NAME: ${{ secrets.CLOUD_SQL_INSTANCE_NAME }}
 
 jobs:
   deploy:
@@ -44,7 +44,7 @@ jobs:
           service: ${{ secrets.APP_NAME }}
           image: ${{ env.IMAGE }}
           region: ${{ env.LOCATION }}
-          flags: '--add-cloudsql-instances=${{ env.CLOUD_SQL_INSTANCE_NAME }}'
+          flags: '--add-cloudsql-instances=${{ env.GCP_PROJECT_ID }}:${{ env.LOCATION }}:${{ env.CLOUD_SQL_INSTANCE_NAME }}'
           env_vars:
             INSTANCE_CONNECTION_NAME=${{ env.GCP_PROJECT_ID }}:${{ env.LOCATION }}:${{ env.CLOUD_SQL_INSTANCE_NAME }},
             DB_USERNAME=${{ secrets.CLOUD_SQL_USER_NAME }},