diff --git a/setup.py b/setup.py
index fcd812e8..99effd91 100755
--- a/setup.py
+++ b/setup.py
@@ -49,6 +49,7 @@ setup(
         'colorlog',
         'attrs',
         'pygments',
+        'colorama',  # numba traceback coloring
 
         # async
         'trio',