diff --git a/css/clear-typography.css b/css/clear-typography.css
index f3cf643..324673d 100644
--- a/css/clear-typography.css
+++ b/css/clear-typography.css
@@ -171,31 +171,31 @@ h1 {
   font-size: 2.33333em;
   line-height: 1em;
   padding: 0.33333em 0 0.6em 0;
-  font-weight: 600; }
+  font-weight: 700; }
 
 h2 {
   font-size: 2em;
   line-height: 1.5em;
   padding: 0.33333em 0 0.4em 0;
-  font-weight: 600; }
+  font-weight: 700; }
 
 h3 {
   font-size: 1.5em;
   line-height: 1em;
   padding: 0em 0 1em 0;
-  font-weight: 600; }
+  font-weight: 700; }
 
 h4 {
   font-size: 1.5em;
   line-height: 1em;
   padding: 0em 0 1em 0;
-  font-weight: 400; }
+  font-weight: 600; }
 
 h5 {
   font-size: 1.33333em;
   line-height: 1em;
   padding: 0.1em 0 1.13333em 0;
-  font-weight: 400; }
+  font-weight: 600; }
 
 h6 {
   font-size: 1.1em;
diff --git a/scss/clear-typography.scss b/scss/clear-typography.scss
index 3325f66..8270c53 100644
--- a/scss/clear-typography.scss
+++ b/scss/clear-typography.scss
@@ -130,23 +130,23 @@ h1, h2, h3, h4, h5, h6, h7 {
 }
 
 h1 {
-  @include title(2.3333333em, 1em, 0.333333em, 0.6em, 600);
+  @include title(2.3333333em, 1em, 0.333333em, 0.6em, 700);
 }
 
 h2 {
-  @include title(2em, 1.5em, 0.333333em, 0.4em, 600);
+  @include title(2em, 1.5em, 0.333333em, 0.4em, 700);
 }
 
 h3 {
-  @include title(1.5em, 1em, 0em, 1em, 600);
+  @include title(1.5em, 1em, 0em, 1em, 700);
 }
 
 h4 {
-  @include title(1.5em, 1em, 0em, 1em, 400);
+  @include title(1.5em, 1em, 0em, 1em, 600);
 }
 
 h5 {
-  @include title(1.333333em, 1em, 0.1em, 1.133333em, 400);
+  @include title(1.333333em, 1em, 0.1em, 1.133333em, 600);
 }
 
 h6 {