diff --git a/.github/workflows/backward-compatibility-check.yml b/.github/workflows/backward-compatibility-check.yml
index d183c9b..c8f1703 100644
--- a/.github/workflows/backward-compatibility-check.yml
+++ b/.github/workflows/backward-compatibility-check.yml
@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/coding-standard.yml b/.github/workflows/coding-standard.yml
index 9a1b320..31f5f40 100644
--- a/.github/workflows/coding-standard.yml
+++ b/.github/workflows/coding-standard.yml
@@ -26,7 +26,7 @@ jobs:
 
         steps:
             - name: "Checkout"
-              uses: actions/checkout@v4
+              uses: actions/checkout@v5
 
             - name: "Install PHP"
               uses: "shivammathur/setup-php@2.35.4"
diff --git a/.github/workflows/mutation-tests.yml b/.github/workflows/mutation-tests.yml
index a812089..95b262f 100644
--- a/.github/workflows/mutation-tests.yml
+++ b/.github/workflows/mutation-tests.yml
@@ -26,7 +26,7 @@ jobs:
 
         steps:
             - name: "Checkout"
-              uses: actions/checkout@v4
+              uses: actions/checkout@v5
 
             - name: "Install PHP"
               uses: "shivammathur/setup-php@2.35.4"
diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
index 3a2a65f..d66333a 100644
--- a/.github/workflows/phpstan.yml
+++ b/.github/workflows/phpstan.yml
@@ -26,7 +26,7 @@ jobs:
 
         steps:
             - name: "Checkout"
-              uses: actions/checkout@v4
+              uses: actions/checkout@v5
 
             - name: "Install PHP"
               uses: "shivammathur/setup-php@2.35.4"
diff --git a/.github/workflows/release-on-milestone-closed-triggering-release-event.yml b/.github/workflows/release-on-milestone-closed-triggering-release-event.yml
index 0f045dd..67fae35 100644
--- a/.github/workflows/release-on-milestone-closed-triggering-release-event.yml
+++ b/.github/workflows/release-on-milestone-closed-triggering-release-event.yml
@@ -18,7 +18,7 @@ jobs:
 
         steps:
             - name: "Checkout"
-              uses: actions/checkout@v4
+              uses: actions/checkout@v5
 
             - name: "Release"
               uses: "laminas/automatic-releases@v1"
diff --git a/.github/workflows/unit.yml b/.github/workflows/unit.yml
index f05f028..09d8764 100644
--- a/.github/workflows/unit.yml
+++ b/.github/workflows/unit.yml
@@ -37,7 +37,7 @@ jobs:
 
         steps:
             - name: "Checkout"
-              uses: actions/checkout@v4
+              uses: actions/checkout@v5
 
             - name: "Install PHP"
               uses: "shivammathur/setup-php@2.35.4"