diff --git a/.mdl_style.rb b/.mdl_style.rb
index 00c733bb5..a7a3b6036 100644
--- a/.mdl_style.rb
+++ b/.mdl_style.rb
@@ -7,3 +7,4 @@ exclude_rule "MD041"
 exclude_rule "MD046"
 
 rule "MD007", indent: 2
+rule "MD026", punctuation: ".,;:!"