diff --git a/setup.py b/setup.py
index 55ba4f6..f28b1fb 100644
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@ with open('README.md', 'r', encoding='utf-8') as f:
     readme = f.read()
 
 REQUIRES = [
-    'opencv_python == 4.0.0.21'
+    'opencv_python == 4.0.0.21',
     'localpubsub == 0.0.3',
     'numpy == 1.16.1'
 ]