diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 142ce6b..cccb978 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Composer install
         uses: php-actions/composer@v6
@@ -47,7 +47,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.head_ref }}
 
diff --git a/.github/workflows/sync-labels.yaml b/.github/workflows/sync-labels.yaml
index 47ac3e7..6fbe544 100644
--- a/.github/workflows/sync-labels.yaml
+++ b/.github/workflows/sync-labels.yaml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Run Label Syncer
         uses: micnncim/action-label-syncer@v1.3.0
diff --git a/src/Factory.php b/src/Factory.php
index 1afaafa..5616dcc 100644
--- a/src/Factory.php
+++ b/src/Factory.php
@@ -7,7 +7,7 @@
 class Factory
 {
     /**
-     * @const int The number of seconds the secure message is valid.
+     * @var int The number of seconds the secure message is valid.
      */
     protected const DEFAULT_EXPIRE = 86400;