diff --git a/tools/verify_versions.py b/tools/verify_versions.py
index b905e8c..af16b53 100644
--- a/tools/verify_versions.py
+++ b/tools/verify_versions.py
@@ -2,7 +2,7 @@
 from urllib.request import urlopen
 import json
 
-def verify_all_mod_versions():
+def verify_all_mod_versions() -> bool:
     """
     Ensure all mod versions are properly declared to GitHub.
 
@@ -32,6 +32,7 @@ def verify_all_mod_versions():
                 print('\t✔️  v{}'.format(version['Version']))
             else:
                 sys.exit('\t❌  v{} (hash comparison failed)'.format(version['Version']))
+    return True
 
 
 def retrieve_tag_info(tag_name, repository_url):