diff --git a/.github/workflows/approve-contributor.yml b/.github/workflows/approve-contributor.yml
index 409a4c32e67..debe87a72b8 100644
--- a/.github/workflows/approve-contributor.yml
+++ b/.github/workflows/approve-contributor.yml
@@ -30,8 +30,8 @@ jobs:
             const commenter = context.payload.comment.user.login;
             const commentBody = (context.payload.comment.body || '').trim();
 
-            const approvalAtStartPattern = /^[\s.]*(?:@[A-Za-z0-9](?:[A-Za-z0-9-]{0,37}[A-Za-z0-9])?(?:\s*,\s*|[.:]\s*|\s+))*(lgtmi|lgtm)(?=$|[\s.])/i;
-            const approvalAtEndPattern = /(?:^|[\s.])(lgtmi|lgtm)[\s.]*$/i;
+            const approvalAtStartPattern = /^[\s.]*(?:@[A-Za-z0-9](?:[A-Za-z0-9-]{0,37}[A-Za-z0-9])?(?:\s*,\s*|[.:]\s*|\s+))*(lgtmi|lgtm)(?=$|[\s]|[^\p{L}\p{N}_\s])/iu;
+            const approvalAtEndPattern = /(?:^|[\s.])(lgtmi|lgtm)\s*(?:[^\p{L}\p{N}_\s])?\s*$/iu;
             const approvalMatch = commentBody.match(approvalAtStartPattern) ?? commentBody.match(approvalAtEndPattern);
 
             if (!approvalMatch) {