diff --git a/ci/licenses_golden/excluded_files b/ci/licenses_golden/excluded_files
index cb86ce8cad58f..2ab9d444732bc 100644
--- a/ci/licenses_golden/excluded_files
+++ b/ci/licenses_golden/excluded_files
@@ -2911,4 +2911,4 @@
 ../../../third_party/zlib/google/zip_reader_unittest.cc
 ../../../third_party/zlib/google/zip_unittest.cc
 ../../../third_party/zlib/patches/README
-../../../tools
\ No newline at end of file
+../../../tools
diff --git a/ci/licenses_golden/tool_signature b/ci/licenses_golden/tool_signature
index 637a7ca2dfc21..446be9279d9b5 100644
--- a/ci/licenses_golden/tool_signature
+++ b/ci/licenses_golden/tool_signature
@@ -1,2 +1,2 @@
-Signature: 2aaa7d1662adb75aac43db23f4bd5d97
+Signature: e9bc01b7e51cb2185dc056dffd7ff351
 
diff --git a/tools/licenses/lib/main.dart b/tools/licenses/lib/main.dart
index 65f5b97cd7f54..6e4badf43f42b 100644
--- a/tools/licenses/lib/main.dart
+++ b/tools/licenses/lib/main.dart
@@ -2121,8 +2121,11 @@ Future<void> main(List<String> arguments) async {
         system.exit(1);
       }
       // write to disk the list of files we did _not_ cover, so it's easier to catch in diffs
+      final String excluded = (_RepositoryDirectory._excluded.map(
+        (fs.IoNode node) => node.fullName,
+      ).toSet().toList()..sort()).join('\n');
       system.File(path.join(argResults['out'] as String, 'excluded_files')).writeAsStringSync(
-        (_RepositoryDirectory._excluded.map((fs.IoNode node) => node.fullName).toSet().toList()..sort()).join('\n'),
+        '$excluded\n',
       );
     }
   } catch (e, stack) {