diff --git a/pyproject.toml b/pyproject.toml
index 879a67e..dce1e04 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ python = ">=3.6.2, <4"
 typer = ">=0.4.1,<0.8.0"
 dataclasses = {version = "^0.7", python = "3.6"}
 pyyaml = ">=5.3.1,<7.0.0"
-pathspec = "^0.9.0"
+pathspec = ">=0.9.0,<0.11.0"
 tomlkit = "^0.11.1"
 libcst = [{version = ">=0.3.10,<0.5.0", python = ">=3.7"}, {version = ">=0.3.10,<0.4.0", python = "<3.7"}]