diff --git a/_sass/custom/announcement.scss b/_sass/custom/announcement.scss
index 3f1403ce0f5e0051a4b48b479f93fc9044373862..69fa57860f54e56f99391be30bb2e683c8a8ec15 100644
--- a/_sass/custom/announcement.scss
+++ b/_sass/custom/announcement.scss
@@ -3,6 +3,7 @@
 }
 
 .announcement-header {
+  @extend .text-gamma;
 }
 
 .announcement-body {
diff --git a/_sass/custom/module.scss b/_sass/custom/module.scss
index 4561a38a7d21a74ab5f2c79041a9f399f23e90f5..e1d564d32b4891250ce59537fb7830db5761f4d9 100644
--- a/_sass/custom/module.scss
+++ b/_sass/custom/module.scss
@@ -101,6 +101,7 @@
 }
 
 .module-header {
+  @extend .text-gamma;
 }
 
 .module-body {