diff --git a/.isort.cfg b/.isort.cfg
index a1bd71c51..8d4c54412 100644
--- a/.isort.cfg
+++ b/.isort.cfg
@@ -7,4 +7,4 @@ line_length=88
 ensure_newline_before_comments=True
 known_third_party=attr,pytest
 known_first_party=omegaconf
-skip=.eggs,.nox,omegaconf/grammar/gen
+skip=.eggs,.nox,omegaconf/grammar/gen,build