diff --git a/.github/workflows/codenotify.yml b/.github/workflows/codenotify.yml
new file mode 100644
index 0000000000000..e3da640794293
--- /dev/null
+++ b/.github/workflows/codenotify.yml
@@ -0,0 +1,21 @@
+# notifies users from CODENOTIFY files if a PR changed any files
+# that they subscribe to
+name: codenotify
+
+on:
+  pull_request:
+    types: [opened, synchronize, ready_for_review]
+
+jobs:
+  codenotify:
+    runs-on: ubuntu-latest
+    name: codenotify
+    permissions:
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+      - uses: sourcegraph/codenotify@v0.6.3
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/presto-parser/src/main/antlr4/com/facebook/presto/sql/parser/CODENOTIFY b/presto-parser/src/main/antlr4/com/facebook/presto/sql/parser/CODENOTIFY
new file mode 100644
index 0000000000000..21af32aa9d852
--- /dev/null
+++ b/presto-parser/src/main/antlr4/com/facebook/presto/sql/parser/CODENOTIFY
@@ -0,0 +1,5 @@
+# notify the following people for changes to the sql language
+# see https://github.com/marketplace/actions/codenotify#codenotify-files for more info
+# about CODENOTIFY files
+
+SqlBase.g4 @rschlussel @kaikalur
diff --git a/presto-parser/src/main/antlr4/com/facebook/presto/sql/parser/SqlBase.g4 b/presto-parser/src/main/antlr4/com/facebook/presto/sql/parser/SqlBase.g4
index 56df4a994c1f6..c3be8ae132b99 100644
--- a/presto-parser/src/main/antlr4/com/facebook/presto/sql/parser/SqlBase.g4
+++ b/presto-parser/src/main/antlr4/com/facebook/presto/sql/parser/SqlBase.g4
@@ -342,6 +342,7 @@ booleanExpression
     | left=booleanExpression operator=OR right=booleanExpression   #logicalBinary
     ;
 
+
 // workaround for https://github.com/antlr/antlr4/issues/780
 predicate[ParserRuleContext value]
     : comparisonOperator right=valueExpression                            #comparison