diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..2c48305
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    groups:
+      github-actions:
+        patterns: ["*"]
+    schedule:
+      interval: "weekly"
+    cooldown:
+      default-days: 7
diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index eea2860..9809c9c 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -29,7 +29,7 @@ jobs:
       CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@a37ce9120846195fa4ece8f58b268e6043cb2f26 # v3.7.0
 
       # no_global_oom_handling is currently broken in 1.69: https://github.com/rust-lang/rust/pull/110649
       # So use 1.68 until it gets fixed.
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 4d6816a..5159748 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@a37ce9120846195fa4ece8f58b268e6043cb2f26 # v3.7.0
 
       - run: cargo publish --locked
         env: