diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9db3bc5..e0ed870 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -50,6 +50,11 @@ jobs:
         node-version: 20.x
         cache: 'npm'
 
+    - name: Install dependencies
+      uses: borales/actions-yarn@v5
+      with:
+        cmd: install --immutable
+
     - name: Build docs
       uses: borales/actions-yarn@v5
       with: