diff --git a/requirements.txt b/requirements.txt
index 9ef3fab..f314b25 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,6 +14,7 @@ elasticsearch-dsl>=7.2.0,<8.0.0
 kafka-python>=1.4.4
 mailsuite>=1.6.1
 nose>=1.3.7
+wheel>=0.37.0
 flake8>=3.7.8
 doc8>=0.8.0
 collective.checkdocs>=0.2