diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 2028cab..4d44b81 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
@@ -97,7 +97,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Set up Python
       uses: actions/setup-python@v4
@@ -133,7 +133,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
@@ -192,7 +192,7 @@ jobs:
           
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Wait for VictoriaMetrics
       run: |
@@ -243,7 +243,7 @@ jobs:
       
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Deploy to staging
       run: |
@@ -268,7 +268,7 @@ jobs:
       
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Deploy to production
       run: |
@@ -295,7 +295,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Install Apache Bench
       run: |
diff --git a/.gitea/workflows/docs.yml b/.gitea/workflows/docs.yml
index 891f519..1ac4db5 100644
--- a/.gitea/workflows/docs.yml
+++ b/.gitea/workflows/docs.yml
@@ -26,7 +26,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Set up Python
       uses: actions/setup-python@v4
@@ -126,7 +126,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Set up Python
       uses: actions/setup-python@v4
@@ -223,7 +223,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Set up Python
       uses: actions/setup-python@v4
@@ -248,8 +248,8 @@ jobs:
         project = 'Northern Thailand Ping River Monitor'
         copyright = '2025, Ping River Monitor Team'
         author = 'Ping River Monitor Team'
-        version = '3.1.1'
-        release = '3.1.1'
+        version = '3.1.2'
+        release = '3.1.2'
         
         extensions = [
             'sphinx.ext.autodoc',
diff --git a/.gitea/workflows/release.yml b/.gitea/workflows/release.yml
index fd02dbb..ac4f902 100644
--- a/.gitea/workflows/release.yml
+++ b/.gitea/workflows/release.yml
@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
     inputs:
       version:
-        description: 'Release version (e.g., v3.1.1)'
+        description: 'Release version (e.g., v3.1.2)'
         required: true
         type: string
 
@@ -28,7 +28,7 @@ jobs:
       
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       with:
         fetch-depth: 0
         
@@ -74,7 +74,7 @@ jobs:
         
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
@@ -112,7 +112,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
@@ -152,7 +152,7 @@ jobs:
     
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Run Trivy vulnerability scanner
       uses: aquasecurity/trivy-action@master
@@ -181,7 +181,7 @@ jobs:
       
     steps:
     - name: Checkout code
-      uses: https://gitea.com/actions/checkout
+      uses: actions/checkout@v5
       
     - name: Deploy to production
       run: |
diff --git a/.gitea/workflows/security.yml b/.gitea/workflows/security.yml
index d782a76..b72f57a 100644
--- a/.gitea/workflows/security.yml
+++ b/.gitea/workflows/security.yml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: https://gitea.com/actions/checkout
+        uses: actions/checkout@v5
 
       - name: Set up Python
         uses: actions/setup-python@v4
@@ -91,7 +91,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: https://gitea.com/actions/checkout
+        uses: actions/checkout@v5
 
       - name: Check GitHub token availability
         run: |
@@ -168,7 +168,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: https://gitea.com/actions/checkout
+        uses: actions/checkout@v5
 
       - name: Set up Python
         uses: actions/setup-python@v4
@@ -213,7 +213,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: https://gitea.com/actions/checkout
+        uses: actions/checkout@v5
 
       - name: Set up Python
         uses: actions/setup-python@v4
@@ -294,7 +294,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: https://gitea.com/actions/checkout
+        uses: actions/checkout@v5
 
       - name: Set up Python
         uses: actions/setup-python@v4