diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..7ddd384
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,22 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    open-pull-requests-limit: 10
+    groups:
+      actions-minor-patch:
+        patterns:
+          - "*"
+        update-types:
+          - "minor"
+          - "patch"
+      actions-major:
+        patterns:
+          - "*"
+        update-types:
+          - "major"
+    cooldown:
+      default-days: 7
diff --git a/.github/workflows/ca.yml b/.github/workflows/ca.yml
index 3ba953f..64186c9 100644
--- a/.github/workflows/ca.yml
+++ b/.github/workflows/ca.yml
@@ -26,7 +26,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Setup PHP
-        uses: shivammathur/setup-php@v2
+        uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
         with:
           php-version: ${{ matrix.php-version }}
           coverage: none
diff --git a/.github/workflows/cs.yml b/.github/workflows/cs.yml
index 67affab..b2ff568 100644
--- a/.github/workflows/cs.yml
+++ b/.github/workflows/cs.yml
@@ -28,7 +28,7 @@ jobs:
           fetch-depth: 0
 
       - name: Setup PHP
-        uses: shivammathur/setup-php@v2
+        uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
         with:
           php-version: ${{ matrix.php-version }}
           coverage: none
diff --git a/.github/workflows/example.yml b/.github/workflows/example.yml
index 4f2842b..fec0f05 100644
--- a/.github/workflows/example.yml
+++ b/.github/workflows/example.yml
@@ -30,7 +30,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Setup PHP
-        uses: shivammathur/setup-php@v2
+        uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
         with:
           php-version: ${{ matrix.php-version }}
           coverage: none
diff --git a/.github/workflows/mt.yml b/.github/workflows/mt.yml
index 88138f1..ada4667 100644
--- a/.github/workflows/mt.yml
+++ b/.github/workflows/mt.yml
@@ -23,7 +23,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Setup PHP
-        uses: shivammathur/setup-php@v2
+        uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
         with:
           php-version: ${{ matrix.php-version }}
           coverage: pcov
diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index 7116094..743cf16 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -28,7 +28,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Setup PHP
-        uses: shivammathur/setup-php@v2
+        uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
         with:
           php-version: ${{ matrix.php-version }}
           coverage: none
diff --git a/.github/workflows/release_ping.yml b/.github/workflows/release_ping.yml
index 906d0fe..3d87f4d 100644
--- a/.github/workflows/release_ping.yml
+++ b/.github/workflows/release_ping.yml
@@ -22,7 +22,7 @@ jobs:
     steps:
       - name: Send notification for new release
         id: slack
-        uses: slackapi/slack-github-action@v1.24.0
+        uses: slackapi/slack-github-action@e28cf165c92ffef168d23c5c9000cffc8a25e117 # v1.24.0
         env:
           release_icon: ${{ ':released:' }}
         with: