diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3693cf06c..83ab72737 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -372,7 +372,7 @@ jobs:
       # Attempt to check out the same branch of Complement as the PR. If it
       # doesn't exist, fallback to HEAD.
       - name: Checkout complement
-        run: .ci/scripts/checkout_complement.sh
+        run: synapse/.ci/scripts/checkout_complement.sh
 
       - run: |
           set -o pipefail
diff --git a/changelog.d/12933.misc b/changelog.d/12933.misc
new file mode 100644
index 000000000..e29bf0240
--- /dev/null
+++ b/changelog.d/12933.misc
@@ -0,0 +1 @@
+Test Synapse against Complement with workers.