diff --git a/.github/workflows/lockdown-canary.yml b/.github/workflows/lockdown-canary.yml
index 75099d933d..c24310b215 100644
--- a/.github/workflows/lockdown-canary.yml
+++ b/.github/workflows/lockdown-canary.yml
@@ -28,6 +28,11 @@ jobs:
         with:
           chrome-version: 'beta'
 
+      - name: build ses
+        run: |
+          cd ./packages/ses/
+          yarn
+
       - name: install dependencies
         run: |
           cd ./packages/ses/smoke-test/