diff --git a/.github/workflows/pr-lint.yaml b/.github/workflows/pr-lint.yaml
index 6460e74d8..0fc492b31 100644
--- a/.github/workflows/pr-lint.yaml
+++ b/.github/workflows/pr-lint.yaml
@@ -21,3 +21,13 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: ludeeus/action-shellcheck@master
+
+  vale:
+    name: runner / vale
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: errata-ai/vale-action@v2.1.1
+        with:
+          files: all
+          fail_on_error: true
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 3abd7c1d5..b5a11b55e 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -132,11 +132,15 @@ the prose of your pull requests and adds suggestions to improve style and clarit
 There is a [VSCode plugin for Vale](https://marketplace.visualstudio.com/items?itemName=ChrisChinchilla.vale-vscode)
 which outputs suggestions to the problems pane in the IDE.
 
+The Fluent Bit repository runs Vale as a GitHub Action on updated text in new pull
+requests. Vale suggestions, errors, and warnings will display in GitHub on the
+**Files changed** page.
+
 [See the Vale tests for Fluent Bit](https://github.com/fluent/fluent-bit-docs/tree/master/vale-styles).
 
 Most Vale tests are at the `suggestion` level and won't block merging.
 
-The following tests are at a `error` level and will prevent merging:
+The following tests are at `error` level and will cause a test failure:
 
 - [AmSpelling](https://developers.google.com/style/word-list)
 - [Ampersand](https://developers.google.com/style/word-list#ampersand)