diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 33a061baf..8d3388624 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,7 +29,7 @@ jobs:
           - 9090:9090
       # sync-testbed for flagd in-process provider reconnect e2e tests
       sync-unstable:
-        image: ghcr.io/open-feature/sync-testbed-unstable:v0.5.4
+        image: ghcr.io/open-feature/sync-testbed-unstable:v0.5.5
         ports:
           - 9091:9090
 
diff --git a/providers/flagd/docker-compose.yaml b/providers/flagd/docker-compose.yaml
index 935f4d099..d8630fc5f 100644
--- a/providers/flagd/docker-compose.yaml
+++ b/providers/flagd/docker-compose.yaml
@@ -12,6 +12,6 @@ services:
     ports:
       - 9090:9090
   flagd-sync-unstable:
-    image: ghcr.io/open-feature/sync-testbed-unstable:v0.5.4
+    image: ghcr.io/open-feature/sync-testbed-unstable:v0.5.5
     ports:
       - 9091:9090
\ No newline at end of file