diff --git a/.github/workflows/sdk-compliance.yml b/.github/workflows/sdk-compliance.yml
index 2285355..df88af8 100644
--- a/.github/workflows/sdk-compliance.yml
+++ b/.github/workflows/sdk-compliance.yml
@@ -14,8 +14,8 @@ on:
 jobs:
   compliance:
     name: PostHog SDK compliance tests
-    uses: PostHog/posthog-sdk-test-harness/.github/workflows/test-sdk-action.yml@be8b8d5a3f94a249659844e94832e874f049c1e4
+    uses: PostHog/posthog-sdk-test-harness/.github/workflows/test-sdk-action.yml@68498bcf3ae95ac941476e6ca3d42d6086e1c7fd
     with:
       adapter-dockerfile: "sdk_compliance_adapter/Dockerfile"
       adapter-context: "."
-      test-harness-version: "0.8.0"
+      test-harness-version: "0.9.0"
diff --git a/sdk_compliance_adapter/docker-compose.yml b/sdk_compliance_adapter/docker-compose.yml
index 878432c..273b31f 100644
--- a/sdk_compliance_adapter/docker-compose.yml
+++ b/sdk_compliance_adapter/docker-compose.yml
@@ -9,7 +9,7 @@ services:
       - test-network
 
   test-harness:
-    image: ghcr.io/posthog/sdk-test-harness:0.8.0
+    image: ghcr.io/posthog/sdk-test-harness:0.9.0
     command: ["run", "--adapter-url", "http://sdk-adapter:8080", "--mock-url", "http://test-harness:8081"]
     networks:
       - test-network