diff --git a/pyproject.toml b/pyproject.toml
index d9953af..fc17b06 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,6 +7,7 @@ line-length = 120
 target-version = ["py38"]
 
 [tool.isort]
+line_length = 120
 profile = "black"
 multi_line_output = 3
 include_trailing_comma = true