diff --git a/conftest.py b/conftest.py
index 6f4d2406..81d0fe54 100644
--- a/conftest.py
+++ b/conftest.py
@@ -17,7 +17,7 @@ collect_ignore = [
     'build/',
     'test/examples',
 ]
-if sys.version_info < (3, 5):
+if sys.version_info < (3, 6):
     # Python 2 not supported syntax
     collect_ignore.append('test/test_inference/test_mixed.py')