diff --git a/requirements-test.txt b/requirements-test.txt
index dedeb35..d859741 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,6 +1,6 @@
 black==21.5b1
 flake8==3.8.*
-isort==5.8.*
+isort==5.9.*
 mock==4.0.3
 mongomock==3.23.*
 mypy==0.812