diff --git a/scripts/update_bugs_by_version.py b/scripts/update_bugs_by_version.py
index 68ccd72a7..655ffe233 100755
--- a/scripts/update_bugs_by_version.py
+++ b/scripts/update_bugs_by_version.py
@@ -35,7 +35,7 @@ for v in versions:
             continue
         versions[v]['bugs'] += [bug['name']]
 
-new_contents = json.dumps(versions, sort_keys=True, indent=4)
+new_contents = json.dumps(versions, sort_keys=True, indent=4, separators=(',', ': '))
 with open(path + '/../docs/bugs_by_version.json', 'r') as bugs_by_version:
     old_contents = bugs_by_version.read()
 with open(path + '/../docs/bugs_by_version.json', 'w') as bugs_by_version: