diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 544fa8a..d9c76b9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -113,7 +113,10 @@ deploy:staging:
     - apk add --no-cache curl jq
   script:
     - echo "Deploying to staging environment..."
-    - curl -X POST ${STAGING_DEPLOY_WEBHOOK} -d "{\"image\": \"$DOCKER_IMAGE\"}"
+    - |
+      curl -X POST "${STAGING_DEPLOY_WEBHOOK}" \
+        -H "Content-Type: application/json" \
+        -d '{"image":"'"${DOCKER_IMAGE}"'"}'
   environment:
     name: staging
     url: https://staging-mtgsearch.example.com
@@ -129,7 +132,10 @@ deploy:production:
     - apk add --no-cache curl jq
   script:
     - echo "Deploying to production..."
-    - curl -X POST ${PROD_DEPLOY_WEBHOOK} -d "{\"image\": \"$DOCKER_IMAGE\"}"
+    - |
+      curl -X POST "${PROD_DEPLOY_WEBHOOK}" \
+        -H "Content-Type: application/json" \
+        -d '{"image":"'"${DOCKER_IMAGE}"'"}'
   environment:
     name: production
     url: https://mtgsearch.example.com