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/check-standard.yaml b/.github/workflows/check-standard.yaml
index 3f5b2ce..5ac50c3 100644
--- a/.github/workflows/check-standard.yaml
+++ b/.github/workflows/check-standard.yaml
@@ -24,7 +24,7 @@ jobs:
       RSPM: ${{ matrix.config.rspm }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
         with:
           fetch-depth: 0  # required for mirroring, see https://stackoverflow.com/a/64272409/474349
 
@@ -39,11 +39,11 @@ jobs:
             xargs -L1 git config --unset-all
           git push --prune https://token:$token@github.com/${CLOUDYR_REPO}.git +refs/remotes/origin/*:refs/heads/* +refs/tags/*:refs/tags/*
 
-      - uses: r-lib/actions/setup-r@v2
+      - uses: r-lib/actions/setup-r@465b7d8e732ca3921382b1674c59bada9cbf3399 # v2.13.0
         with:
           r-version: ${{ matrix.config.r }}
 
-      - uses: r-lib/actions/setup-pandoc@v2
+      - uses: r-lib/actions/setup-pandoc@465b7d8e732ca3921382b1674c59bada9cbf3399 # v2.13.0
 
       - name: Query dependencies
         run: |
@@ -54,7 +54,7 @@ jobs:
 
       - name: Cache R packages
         if: runner.os != 'Windows'
-        uses: actions/cache@v3
+        uses: actions/cache@6f8efc29b200d32929f49075959781ed54ec270c # v3.5.0
         with:
           path: ${{ env.R_LIBS_USER }}
           key: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-${{ hashFiles('.github/depends.Rds') }}
@@ -85,7 +85,7 @@ jobs:
 
       - name: Upload check results
         if: failure()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         with:
           name: ${{ runner.os }}-r${{ matrix.config.r }}-results
           path: check