== should be !=.
diff --git a/setup.py b/setup.py
index ea2ea18..d00f9fe 100644
--- a/setup.py
+++ b/setup.py
@@ -62,7 +62,7 @@
     "iso8601",
 ]
 
-if sys.version_info[:2] == (2, 6):
+if sys.version_info[:2] != (2, 6):
     test_requirements.append("hypothesis")
     test_requirements.append("hypothesis-pytest")