diff --git a/.github/workflows/cgl.yaml b/.github/workflows/cgl.yaml
index cf2b8ca..b3c776e 100644
--- a/.github/workflows/cgl.yaml
+++ b/.github/workflows/cgl.yaml
@@ -30,7 +30,7 @@ jobs:
 
       # Install dependencies
       - name: Install Composer dependencies
-        uses: ramsey/composer-install@v3
+        uses: ramsey/composer-install@4.0.0
 
       # Analyze
       - name: Analyze dependencies
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 9ac9566..4e5aa0f 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -41,7 +41,7 @@ jobs:
 
       # Install dependencies
       - name: Install Composer dependencies
-        uses: ramsey/composer-install@v3
+        uses: ramsey/composer-install@4.0.0
         with:
           dependency-versions: ${{ matrix.dependencies }}
           composer-options: --with=typo3/cms-core:"^${{ matrix.typo3-version }}"
@@ -77,7 +77,7 @@ jobs:
 
       # Install dependencies
       - name: Install Composer dependencies
-        uses: ramsey/composer-install@v3
+        uses: ramsey/composer-install@4.0.0
 
       # Run tests
       - name: Run tests