diff --git a/.github/workflows/code-style.yml b/.github/workflows/code-style.yml
index aca317e..4ef6d12 100644
--- a/.github/workflows/code-style.yml
+++ b/.github/workflows/code-style.yml
@@ -37,7 +37,7 @@ jobs:
                   tools: cs2pr
 
             - name: Install dependencies
-              uses: ramsey/composer-install@v2
+              uses: ramsey/composer-install@4.0.0
 
             - name: Run Grumphp
               run: vendor/bin/grumphp run --testsuite=cs -n
diff --git a/.github/workflows/mutation-tests.yml b/.github/workflows/mutation-tests.yml
index 411c451..681c466 100644
--- a/.github/workflows/mutation-tests.yml
+++ b/.github/workflows/mutation-tests.yml
@@ -38,7 +38,7 @@ jobs:
                   coverage: pcov
 
             - name: Install dependencies
-              uses: ramsey/composer-install@v2
+              uses: ramsey/composer-install@4.0.0
 
             - name: Run Grumphp
               env:
diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
index c6a3eef..5a96433 100644
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -38,7 +38,7 @@ jobs:
                   tools: cs2pr
 
             - name: Install dependencies
-              uses: ramsey/composer-install@v2
+              uses: ramsey/composer-install@4.0.0
 
             - name: Run Grumphp
               run: vendor/bin/grumphp run --tasks=psalm,phpstan -n
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 8baffc6..9594593 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -46,7 +46,7 @@ jobs:
                   coverage: pcov
 
             - name: Install dependencies
-              uses: ramsey/composer-install@v2
+              uses: ramsey/composer-install@4.0.0
 
             - name: Run Grumphp
               run: vendor/bin/grumphp run --tasks=phpunit,clover_coverage