diff --git a/pyproject.toml b/pyproject.toml
index 7cb78fc..5bd3ac6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -66,7 +66,7 @@ dev = [
     "isort>=5.0.6,<6.0.0",
     "mypy>=0.982,<2.0.0",
     "pre-commit >=2.17.0,<3.0.0",
-    "watchfiles>=0.16.1,<0.20.0"
+    "watchfiles>=0.16.1,<0.22.0"
 ]
 
 all = [