diff --git a/.github/workflows/mutation.yml b/.github/workflows/mutation.yml
index 8c737242..964afbde 100644
--- a/.github/workflows/mutation.yml
+++ b/.github/workflows/mutation.yml
@@ -54,7 +54,7 @@ jobs:
           coverage: pcov
 
       - name: Install Composer dependencies
-        uses: ramsey/composer-install@a8d0d959dab41457692a5e2041bd9b757a119e3f # 3.2.1
+        uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
 
       - name: Install db.
         uses: yiisoft/actions/install-packages@master