diff --git a/CHANGELOG.md b/CHANGELOG.md
index 48b3bfcd..a3434257 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Bulma Changelog
 
+## 0.6.2
+
+### Improvements
+
+* #1343 Add `sub` and `sup` title sizes
+
 ## 0.6.1
 
 ### New features
diff --git a/sass/elements/title.sass b/sass/elements/title.sass
index 90721656..77353601 100644
--- a/sass/elements/title.sass
+++ b/sass/elements/title.sass
@@ -3,8 +3,8 @@ $title-size: $size-3 !default
 $title-weight: $weight-semibold !default
 $title-strong-color: inherit !default
 $title-strong-weight: inherit !default
-$title-sub-size: 75% !default
-$title-sup-size: 75% !default
+$title-sub-size: 0.75em !default
+$title-sup-size: 0.75em !default
 
 $subtitle-color: $grey-dark !default
 $subtitle-size: $size-5 !default