diff --git a/conftest.py b/conftest.py
index 2b1dbef5..f693b940 100644
--- a/conftest.py
+++ b/conftest.py
@@ -8,7 +8,8 @@ import jedi
 collect_ignore = [
     'setup.py',
     '__main__.py',
-    'jedi/evaluate/compiled/subprocess/__main__.py'
+    'jedi/evaluate/compiled/subprocess/__main__.py',
+    'build/',
 ]