diff --git a/lib/spack/spack/cmd/style.py b/lib/spack/spack/cmd/style.py
index 922e81ef8b..42440a1171 100644
--- a/lib/spack/spack/cmd/style.py
+++ b/lib/spack/spack/cmd/style.py
@@ -40,9 +40,9 @@ def grouper(iterable, n, fillvalue=None):
 #: bootstrapped or present in the environment.
 tool_names = [
     "isort",
-    "mypy",
     "black",
     "flake8",
+    "mypy",
 ]
 
 #: tools we run in spack style