diff --git a/.github/workflows/restrict-pr-authors.yaml b/.github/workflows/restrict-pr-authors.yaml
index f0eaad3d5..51a381dc8 100644
--- a/.github/workflows/restrict-pr-authors.yaml
+++ b/.github/workflows/restrict-pr-authors.yaml
@@ -40,24 +40,26 @@ jobs:
         with:
           github-token: ${{ secrets.PR_CLOSE_TOKEN }}
           script: |
+            // List of allowed users (all lowercase)
             const allowed = [
               "expsa",
               "moutazmuhammad",
               "ronozoro",
-              "Abubaker-Altaib",
+              "abubaker-altaib",
               "altexp",
               "the5abir",
               "ahmadaking",
               "kchyounes19",
               "abdurrahman-saber"
-            ];
+            ].map(u => u.toLowerCase());
 
             const pr = context.payload.pull_request;
-            const prAuthor = pr.user.login;
+            const prAuthor = pr.user.login.toLowerCase();
             const owner = context.repo.owner;
             const repo = context.repo.repo;
 
             core.info(`PR author: ${prAuthor}`);
+            core.info(`Allowed users: ${allowed.join(", ")}`);
 
             // Check PR author
             if (!allowed.includes(prAuthor)) {
@@ -79,7 +81,11 @@ jobs:
             });
 
             for (const commit of commitList.data) {
-              const commitAuthor = commit.author ? commit.author.login : null;
+              const commitAuthor = commit.author ? commit.author.login.toLowerCase() : null;
+
+              if (!commit.author) {
+                core.warning(`Commit ${commit.sha} has no GitHub-linked author.`);
+              }
 
               if (commitAuthor && !allowed.includes(commitAuthor)) {
                 core.error(`Unauthorized commit author: ${commitAuthor}. Closing PR...`);