diff --git a/requirements-dev.txt b/requirements-dev.txt
index 56c6d5f17..8ec440220 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -18,7 +18,7 @@ flake8>=3.8.3,<3.9; python_version >= "3.6"
 # Fix for https://github.com/PyCQA/flake8/issues/1701
 importlib-metadata>=1.1.0,<4.3; python_version < "3.8"
 isort; python_version < "3.6"
-isort>5.5; python_version >= "3.6"
+isort>5.5,!=5.11.0; python_version >= "3.6"
 mock; python_version < "3.6"
 mock>4; python_version >= "3.6"
 pylint<2.7; python_version < "3.6"  # pyup: ignore