diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 1b4251583ec..69e1542909c 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -20,7 +20,7 @@ env:
   QW_S3_ENDPOINT: "http://localhost:4566" # Services are exposed as localhost because we are not running coverage in a container.
   QW_S3_FORCE_PATH_STYLE_ACCESS: 1
   TEST_DATABASE_URL: postgres://quickwit-dev:quickwit-dev@localhost:5432/quickwit-metastore-dev
-  PUBSUB_EMULATOR_HOST: "localhost:8681"
+  PUBSUB_EMULATOR_HOST: "localhost:9898"
 
 jobs:
   test:
@@ -108,9 +108,9 @@ jobs:
       gcp-pubsub-emulator:
         image: thekevjames/gcloud-pubsub-emulator:7555256f2c
         ports:
-          - "8681:8681"
-        environment:
-          - PUBSUB_PROJECT1=quickwit-emulator,emulator_topic:emulator_subscription
+          - "9898:8681"
+        env:
+          PUBSUB_PROJECT1: "quickwit-emulator,emulator_topic:emulator_subscription"
 
     steps:
       - uses: actions/checkout@v3