diff --git a/ament_flake8/ament_flake8/configuration/ament_flake8.ini b/ament_flake8/ament_flake8/configuration/ament_flake8.ini
index ee40a618..097c1f05 100644
--- a/ament_flake8/ament_flake8/configuration/ament_flake8.ini
+++ b/ament_flake8/ament_flake8/configuration/ament_flake8.ini
@@ -1,6 +1,6 @@
 [flake8]
 extend-ignore = B902,C816,D100,D101,D102,D103,D104,D105,D106,D107,D203,D212,D404,I202
 import-order-style = google
-max-line-length = 99
+max-line-length = 100
 show-source = true
 statistics = true