diff --git a/taskcluster/ci/config.yml b/taskcluster/ci/config.yml
index 64b4949..7ffa31a 100644
--- a/taskcluster/ci/config.yml
+++ b/taskcluster/ci/config.yml
@@ -3,7 +3,7 @@ trust-domain: "mozilla"
 task-priority: low
 
 taskgraph:
-  cached-task-prefix: "mozilla.v2.simple-github-client"
+  cached-task-prefix: "mozilla.v2.simple-github"
   repositories:
     simple-github-client:
       name: "simple-github-client"