diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index fee47fec..51a27e30 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -21,7 +21,7 @@ jobs:
       - name: Checking Composer
         run: composer validate --strict
 
-      - uses: ramsey/composer-install@v2
+      - uses: ramsey/composer-install@4.0.0
 
       - name: Running PHPStan
         run: php vendor/bin/phpstan
@@ -41,7 +41,7 @@ jobs:
         with:
           php-version: ${{ env.php-version }}
 
-      - uses: ramsey/composer-install@v2
+      - uses: ramsey/composer-install@4.0.0
 
       - name: Running Tailwind CSS build
         run: php bin/console tailwind:build --minify