diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 43e9ce1a8..8d7779d03 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -59,7 +59,7 @@ jobs:
 
       - name: Install dev deps
         run: |
-          yarn
+          yarn --frozen-lockfile
 
       - name: Lint
         run: |