diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
new file mode 100644
index 000000000..f4b89a041
--- /dev/null
+++ b/.git-blame-ignore-revs
@@ -0,0 +1,2 @@
+# ignore SHA that added isort
+2f421ce6049dc74a1520280adf8c350c1c567e9f
diff --git a/setup.py b/setup.py
index 2380b86f1..c9e6f69ea 100644
--- a/setup.py
+++ b/setup.py
@@ -43,11 +43,11 @@
     'lint': [
         "flake8==3.8.2",
         "flake8-bugbear==20.1.4",
+        "isort>=5.10.1",
         "mypy==0.910",
         "pydocstyle>=6.0.0",
         "types-setuptools",
         "importlib-metadata<5.0;python_version<'3.8'",
-        "isort==5.11.4"
     ],
     'benchmark': [
         "termcolor>=1.1.0,<2.0.0",