diff --git a/pyproject.toml b/pyproject.toml
index f73b80f..9d6545a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ strip-ansi = "*"
 
 [tool.isort]
 profile = "black"
-skip = [".gitignore"]
+extend_skip = [".gitignore"]
 # This is necessary due to https://github.com/PyCQA/isort/issues/1835
 follow_links = false