diff --git a/.flake8 b/.flake8
index e6d773080..9f055a87f 100644
--- a/.flake8
+++ b/.flake8
@@ -1,5 +1,5 @@
 [flake8]
-exclude = .git,.nox,.tox,omegaconf/grammar/gen
+exclude = .git,.nox,.tox,omegaconf/grammar/gen, build
 max-line-length = 119
 select = E,F,W,C
 ignore=W503,E203