diff --git a/themes/doc-theme/static/css/doc-theme.css b/themes/doc-theme/static/css/doc-theme.css
index b6f4847..6ba7b50 100644
--- a/themes/doc-theme/static/css/doc-theme.css
+++ b/themes/doc-theme/static/css/doc-theme.css
@@ -67,6 +67,11 @@ h3 {
   font-size: 1em;
   padding-top: 1em;
 }
+h4 {
+  font-family: 'Montserrat';
+  letter-spacing: normal;
+  padding-top: 1em;
+}
 
 
 h1 {