diff --git a/.github/workflows/backward-compatibility-check.yml b/.github/workflows/backward-compatibility-check.yml
index 9f1f01e..f46ea2f 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@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/coding-standard.yml b/.github/workflows/coding-standard.yml
index 85a97ec..6065c39 100644
--- a/.github/workflows/coding-standard.yml
+++ b/.github/workflows/coding-standard.yml
@@ -26,7 +26,7 @@ jobs:
 
         steps:
             - name: "Checkout"
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
 
             - name: "Install PHP"
               uses: "shivammathur/setup-php@2.35.5"
diff --git a/.github/workflows/mutation-tests.yml b/.github/workflows/mutation-tests.yml
index 27ae6dc..b9ae255 100644
--- a/.github/workflows/mutation-tests.yml
+++ b/.github/workflows/mutation-tests.yml
@@ -26,7 +26,7 @@ jobs:
 
         steps:
             - name: "Checkout"
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
 
             - name: "Install PHP"
               uses: "shivammathur/setup-php@2.35.5"
diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
index c6cd61d..78d109d 100644
--- a/.github/workflows/phpstan.yml
+++ b/.github/workflows/phpstan.yml
@@ -26,7 +26,7 @@ jobs:
 
         steps:
             - name: "Checkout"
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
 
             - name: "Install PHP"
               uses: "shivammathur/setup-php@2.35.5"
diff --git a/.github/workflows/psalm.yml b/.github/workflows/psalm.yml
index 890aac6..ca0bd31 100644
--- a/.github/workflows/psalm.yml
+++ b/.github/workflows/psalm.yml
@@ -26,7 +26,7 @@ jobs:
 
         steps:
             - name: "Checkout"
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
 
             - name: "Install PHP"
               uses: "shivammathur/setup-php@2.35.5"
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 67fae35..8af28e8 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@v5
+              uses: actions/checkout@v6
 
             - name: "Release"
               uses: "laminas/automatic-releases@v1"
diff --git a/.github/workflows/unit.yml b/.github/workflows/unit.yml
index 346c3da..d66ef23 100644
--- a/.github/workflows/unit.yml
+++ b/.github/workflows/unit.yml
@@ -36,7 +36,7 @@ jobs:
 
         steps:
             - name: "Checkout"
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
 
             - name: "Install PHP"
               uses: "shivammathur/setup-php@2.35.5"