diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..3a3306d
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,37 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+    groups:
+      github-actions:
+        patterns:
+          - "*"
+
+  - package-ecosystem: maven
+    directory: /
+    schedule:
+      interval: weekly
+    groups:
+      maven:
+        patterns:
+          - "*"
+
+  - package-ecosystem: gradle
+    directory: /intellij-plugin
+    schedule:
+      interval: weekly
+    groups:
+      gradle:
+        patterns:
+          - "*"
+
+  - package-ecosystem: npm
+    directory: /vscode-extension
+    schedule:
+      interval: weekly
+    groups:
+      npm:
+        patterns:
+          - "*"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8d00560..e107cdf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,15 +5,18 @@ on:
     branches: [main]
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   server:
     name: Build and test server
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Set up JDK 17
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6 # v6.0.1
         with:
           distribution: temurin
           java-version: '17'
@@ -24,7 +27,7 @@ jobs:
 
       - name: Upload test reports
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
         with:
           name: surefire-reports
           path: target/surefire-reports/
@@ -35,10 +38,10 @@ jobs:
     runs-on: ubuntu-latest
     needs: server
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Set up JDK 17
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6 # v6.0.1
         with:
           distribution: temurin
           java-version: '17'
@@ -48,7 +51,7 @@ jobs:
         run: mvn --batch-mode -DskipTests package
 
       - name: Set up JDK for Gradle
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6 # v6.0.1
         with:
           distribution: temurin
           java-version: '17'
@@ -59,7 +62,7 @@ jobs:
         run: ./gradlew buildPlugin --no-daemon
 
       - name: Upload plugin package
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
         with:
           name: intellij-plugin
           path: intellij-plugin/build/distributions/*.zip
@@ -83,10 +86,10 @@ jobs:
           - os: macos-latest
             target: darwin-arm64
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Set up JDK 17
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6 # v6.0.1
         with:
           distribution: temurin
           java-version: '17'
@@ -96,7 +99,7 @@ jobs:
         run: mvn --batch-mode -DskipTests package
 
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: '24'
 
@@ -107,7 +110,7 @@ jobs:
           npm run package -- ${{ matrix.target }}
 
       - name: Upload extension package
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
         with:
           name: vscode-extension-${{ matrix.target }}
           path: vscode-extension/*.vsix
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 4016229..18b8cdd 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -30,17 +30,17 @@ jobs:
             target: darwin-arm64
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Fail if not running on main branch
         if: ${{ github.ref != 'refs/heads/main' }}
-        uses: actions/github-script@v7
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           script: |
             core.setFailed('This workflow must run on main. Current ref: ${{ github.ref }}')
 
       - name: Set up JDK 17 for Maven
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6 # v6.0.1
         with:
           distribution: temurin
           java-version: '17'
@@ -50,7 +50,7 @@ jobs:
         run: mvn --batch-mode -DskipTests package
 
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: '24'
 
@@ -62,7 +62,7 @@ jobs:
           npm run package -- ${{ matrix.target }}
 
       - name: Upload extension package
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
         with:
           name: vscode-extension-${{ matrix.target }}
           path: vscode-extension/*.vsix
@@ -78,17 +78,17 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Fail if not running on main branch
         if: ${{ github.ref != 'refs/heads/main' }}
-        uses: actions/github-script@v7
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           script: |
             core.setFailed('This workflow must run on main. Current ref: ${{ github.ref }}')
 
       - name: Set up JDK 17 for Maven
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6 # v6.0.1
         with:
           distribution: temurin
           java-version: '17'
@@ -98,7 +98,7 @@ jobs:
         run: mvn --batch-mode -DskipTests package
 
       - name: Set up JDK 17 for Gradle
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6 # v6.0.1
         with:
           distribution: temurin
           java-version: '17'
@@ -109,7 +109,7 @@ jobs:
         run: ./gradlew buildPlugin --no-daemon
 
       - name: Download platform-specific extension packages
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
         with:
           pattern: vscode-extension-*
           path: vscode-extension
@@ -122,7 +122,7 @@ jobs:
 
       - name: Set up Node.js
         if: ${{ env.OVSX_PAT != '' }}
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: '24'