diff --git a/setup.py b/setup.py
index 81a41dec9..a75f64b70 100755
--- a/setup.py
+++ b/setup.py
@@ -40,7 +40,7 @@ install_requires = [
     "pytz",
     "python-dateutil<3.0.0,>=2.1",
     "responses>=0.9.0",
-    "MarkupSafe<2.0",  # This is a Jinja2 dependency, 2.0.0a1 currently seems broken
+    "MarkupSafe!=2.0.0a1",  # This is a Jinja2 dependency, 2.0.0a1 currently seems broken
 ]
 
 #