diff --git a/.github/workflows/sign-off.yml b/.github/workflows/sign-off.yml
index b51040f..bf9083e 100644
--- a/.github/workflows/sign-off.yml
+++ b/.github/workflows/sign-off.yml
@@ -24,7 +24,7 @@ jobs:
             }
 
             // This regex is intentionally left lenient.
-            const signOffRegex = /signed[_\- ]off[_\- ]by: [\w ]+ <.+(@|at).+>/i;
+            const signOffRegex = /signed[_\- ]off[_\- ]by: [\S ]+ <?.+(@|at).+>?/i;
 
             if (signOffRegex.test(context.payload.pull_request.body ?? "")) {
               core.notice('Pull request body contains a sign-off notice');