diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 094721c..08baac9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,7 +37,7 @@ jobs:
           coverage: pcov
 
       - name: Composer install
-        uses: ramsey/composer-install@v3
+        uses: ramsey/composer-install@v4
         with:
           dependency-versions: ${{ matrix.dependencies }}
           composer-options: ${{ matrix.composer-options }}
@@ -74,7 +74,7 @@ jobs:
           tools: phive, cs2pr
 
       - name: Composer install
-        uses: ramsey/composer-install@v3
+        uses: ramsey/composer-install@v4
 
       - name: Install PHP tools with phive.
         run: "phive install --trust-gpg-keys 'CF1A108D0E7AE720,51C67305FFC2E5C0,99BF4D9A33D65E1E,12CE0F1D262429A5'"