diff --git a/articles/linter.rst b/articles/linter.rst
index c9974fa..ae03fdc 100644
--- a/articles/linter.rst
+++ b/articles/linter.rst
@@ -48,7 +48,7 @@ This linter provides enhanced rules. To install it,
 
    pip install -Iv rstcheck==5.0.0
 
-.. warning:: rstcheck 6 is includes too many breaking changes, so it is not supported.
+.. warning:: rstcheck 6 includes too many breaking changes, so it is not supported.
 
 Related Resources
 -----------------