diff --git a/Rover_Lookup/lookup.py b/Rover_Lookup/lookup.py
index 00631a16..454e4452 100644
--- a/Rover_Lookup/lookup.py
+++ b/Rover_Lookup/lookup.py
@@ -54,8 +54,11 @@ def github_username_to_emails(
 
     # Construct the LDAP filter to match the GitHub "Professional Social Media" URL.
     # The rhatSocialURL field contains values like "Github->https://github.com/username".
+    # However, 5% of the entries include a trailing slash (which GitHub accepts),
+    # so look for those, too.
     github_url = f"https://github.com/{github_username}"
-    ldap_filter = f"(rhatSocialURL=Github->{github_url})"
+    filter_clause = f"rhatSocialURL=Github->{github_url}"
+    ldap_filter = f"(|({filter_clause})({filter_clause}/))"
 
     # Attributes to retrieve (email fields)
     attributes = ["rhatPrimaryMail", "mail", "rhatPreferredAlias"]
diff --git a/Rover_Lookup/tests/test_lookup.py b/Rover_Lookup/tests/test_lookup.py
index 43efd2d3..d2edc863 100644
--- a/Rover_Lookup/tests/test_lookup.py
+++ b/Rover_Lookup/tests/test_lookup.py
@@ -72,10 +72,9 @@ def test_successful_lookup_single_record(self, mock_connection_class, caplog):
         # Verify LDAP query was called correctly
         mock_conn.search.assert_called_once()
         search_args = mock_conn.search.call_args
-        assert (
-            search_args[1]["search_filter"]
-            == "(rhatSocialURL=Github->https://github.com/test-user)"
-        )
+        filter_part = "rhatSocialURL=Github->https://github.com/test-user"
+        expected_filter = f"(|({filter_part})({filter_part}/))"
+        assert search_args[1]["search_filter"] == expected_filter
         assert "rhatPrimaryMail" in search_args[1]["attributes"]
         assert "mail" in search_args[1]["attributes"]
         assert "rhatPreferredAlias" in search_args[1]["attributes"]