diff --git a/requirements.txt b/requirements.txt
index ed61eb8..e0b6fa1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,4 +12,4 @@ pytest-cov==2.8.1; python_version >= "2.7"
 pytest-mock==1.6.3; python_version < "2.7"
 pytest-mock==1.11.2; python_version >= "2.7"
 setuptools==36.8.0; python_version < "2.7"
-zipp==1.1.0; python_version < "3.6"
+zipp==1.1.0; python_version >= "2.7" and python_version < "3.6"