diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..1603cdd
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,9 @@
+# Dependabot configuration file.
+# See https://docs.github.com/en/code-security/dependabot/dependabot-version-updates
+version: 2
+
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"
diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index ced2b7d..82901c9 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -20,8 +20,8 @@
       matrix:
         sdk: [dev]
     steps:
-    - uses: actions/checkout@v2
-    - uses: dart-lang/setup-dart@v1.0
+    - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8
+    - uses: dart-lang/setup-dart@6a218f2413a3e78e9087f638a238f6b40893203d
       with:
         sdk: ${{ matrix.sdk }}
     - id: install
@@ -43,8 +43,8 @@
         os: [ubuntu-latest]
         sdk: [2.12.0, dev]
     steps:
-    - uses: actions/checkout@v2
-    - uses: dart-lang/setup-dart@v1.0
+    - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8
+    - uses: dart-lang/setup-dart@6a218f2413a3e78e9087f638a238f6b40893203d
       with:
         sdk: ${{ matrix.sdk }}
     - id: install
diff --git a/.github/workflows/no-response.yml b/.github/workflows/no-response.yml
new file mode 100644
index 0000000..fdc1c6a
--- /dev/null
+++ b/.github/workflows/no-response.yml
@@ -0,0 +1,34 @@
+# A workflow to close issues where the author hasn't responded to a request for
+# more information; see https://github.com/godofredoc/no-response for docs.
+
+name: No Response
+
+# Both `issue_comment` and `scheduled` event types are required.
+on:
+  issue_comment:
+    types: [created]
+  schedule:
+    # Schedule for five minutes after the hour, every hour
+    - cron: '5 * * * *'
+
+# All permissions not specified are set to 'none'.
+permissions:
+  issues: write
+
+jobs:
+  noResponse:
+    runs-on: ubuntu-latest
+    if: ${{ github.repository_owner == 'dart-lang' }}
+    steps:
+      - uses: godofredoc/no-response@0ce2dc0e63e1c7d2b87752ceed091f6d32c9df09
+        with:
+          responseRequiredLabel: "needs-info"
+          responseRequiredColor: 4774bc
+          daysUntilClose: 14
+          # Comment to post when closing an Issue for lack of response.
+          closeComment: >
+            Without additional information we're not able to resolve this
+            issue, so it will be closed at this time. You're still free to add
+            more info and respond to any questions above, though. We'll reopen
+            the case if you do. Thanks for your contribution!
+          token: ${{ github.token }}