diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bd6ab621..01887334 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       
     - name: Set up JDK 17
       uses: actions/setup-java@v4
@@ -74,7 +74,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       
     - name: Set up JDK 17
       uses: actions/setup-java@v4
@@ -115,7 +115,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       
     - name: Set up JDK 17
       uses: actions/setup-java@v4
@@ -160,7 +160,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       
     - name: Set up JDK 17
       uses: actions/setup-java@v4
diff --git a/.github/workflows/claude-code-review-manual.yml b/.github/workflows/claude-code-review-manual.yml
index 452c3cf8..fc5363c2 100644
--- a/.github/workflows/claude-code-review-manual.yml
+++ b/.github/workflows/claude-code-review-manual.yml
@@ -29,7 +29,7 @@ jobs:
     
     steps:
       - name: Checkout PR
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: refs/pull/${{ inputs.pr_number }}/merge
           fetch-depth: 0
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 64a3e5b1..cf119f44 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -26,7 +26,7 @@ jobs:
       actions: read # Required for Claude to read CI results on PRs
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/fastlane-deploy.yml b/.github/workflows/fastlane-deploy.yml
index 41b78508..96821395 100644
--- a/.github/workflows/fastlane-deploy.yml
+++ b/.github/workflows/fastlane-deploy.yml
@@ -29,7 +29,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       
     - name: Set up JDK 17
       uses: actions/setup-java@v4
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index f0bd16f2..6316fc19 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -45,7 +45,7 @@ jobs:
       
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       with:
         fetch-depth: 2  # Need history for version comparison
         token: ${{ secrets.GITHUB_TOKEN }}
@@ -170,7 +170,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       
     - name: Set up JDK 17
       uses: actions/setup-java@v4
@@ -246,7 +246,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       
     - name: Set up JDK 17
       uses: actions/setup-java@v4
@@ -309,7 +309,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       
     - name: Download APK artifact
       uses: actions/download-artifact@v4
@@ -558,7 +558,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       
     - name: Download AAB artifact
       uses: actions/download-artifact@v4
@@ -923,7 +923,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       
     - name: Set up Python
       uses: actions/setup-python@v5