diff --git a/setup.cfg b/setup.cfg
index 58b4dc0..a78b67c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -42,7 +42,7 @@ install_requires=
 # And in which releases we will update those ranges here:
 # http://flake8.pycqa.org/en/latest/internal/releases.html#releasing-flake8
     pyflakes >= 2.2.0, < 2.3.0
-    pycodestyle >= 2.5.0, < 2.6.0
+    pycodestyle >= 2.6.0a1, < 2.7.0
     mccabe >= 0.6.0, < 0.7.0
     enum34; python_version<"3.4"
     typing; python_version<"3.5"