diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index db86156..7da1f95 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -9,6 +9,8 @@ updates:
     open-pull-requests-limit: 0
 
   # Maintain dependencies for Composer
+    ignore:
+      - dependency-name: "yiisoft/*"
   - package-ecosystem: "composer"
     directory: "/"
     schedule:
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index fd797cf..f53b13f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -22,12 +22,16 @@ on:
 
 name: build
 
+permissions:
+  contents: read
 jobs:
   phpunit:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5
+        with:
+          persist-credentials: false
       - name: Build
         working-directory: ./tests
         run: docker compose build
@@ -35,7 +39,7 @@ jobs:
         working-directory: ./tests
         run: docker compose run --rm php-cli vendor/bin/phpunit --coverage-clover ./tests/runtime/coverage.xml
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@b9fd7d16f6d7d1b5d2bec1a2887e65ceed900238
         with:
           verbose: true
           files: ./tests/runtime/coverage.xml
diff --git a/.github/workflows/composer-require-checker.yml b/.github/workflows/composer-require-checker.yml
index a857bce..560a8c0 100644
--- a/.github/workflows/composer-require-checker.yml
+++ b/.github/workflows/composer-require-checker.yml
@@ -24,6 +24,8 @@ on:
 
 name: Composer require checker
 
+permissions:
+  contents: read
 jobs:
   composer-require-checker:
     uses: yiisoft/actions/.github/workflows/composer-require-checker.yml@master
diff --git a/.github/workflows/mutation.yml b/.github/workflows/mutation.yml
index 4c64b99..37445d0 100644
--- a/.github/workflows/mutation.yml
+++ b/.github/workflows/mutation.yml
@@ -28,6 +28,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10
+        with:
+          persist-credentials: false
       - name: Mutation tests
         run: make mutation
diff --git a/.github/workflows/rector.yml b/.github/workflows/rector.yml
index 7bb92d8..64bdca8 100644
--- a/.github/workflows/rector.yml
+++ b/.github/workflows/rector.yml
@@ -19,6 +19,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10
+        with:
+          persist-credentials: false
       - name: Rector
         run: make rector
diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
index e33eca8..2047aec 100644
--- a/.github/workflows/static.yml
+++ b/.github/workflows/static.yml
@@ -22,6 +22,8 @@ on:
 
 name: static analysis
 
+permissions:
+  contents: read
 jobs:
   psalm:
     uses: yiisoft/actions/.github/workflows/psalm.yml@master
diff --git a/.github/zizmor.yml b/.github/zizmor.yml
new file mode 100644
index 0000000..85ca798
--- /dev/null
+++ b/.github/zizmor.yml
@@ -0,0 +1,5 @@
+rules:
+  unpinned-uses:
+    config:
+      policies:
+        "yiisoft/*": any