diff --git a/source-sans-3VF.css b/source-sans-3VF.css
index 99213736a3fdb72eb4e3fbdd9dc342883bf2ec13..a6821c48738a673b098d99372e023604b1bad056 100755
--- a/source-sans-3VF.css
+++ b/source-sans-3VF.css
@@ -3,9 +3,9 @@
     font-weight: 200 900;
     font-style: normal;
     font-stretch: normal;
-    src: url('WOFF2/VAR/SourceSans3VF-Roman.ttf.woff2') format('woff2'),
-         url('WOFF/VAR/SourceSans3VF-Roman.ttf.woff') format('woff'),
-         url('VAR/SourceSans3VF-Roman.ttf') format('truetype');
+    src: url('WOFF2/VAR/SourceSans3VF-Roman.ttf.woff2') format('woff2-variations'),
+         url('WOFF/VAR/SourceSans3VF-Roman.ttf.woff') format('woff-variations'),
+         url('VAR/SourceSans3VF-Roman.ttf') format('truetype-variations');
 }
 
 @font-face{
@@ -13,7 +13,7 @@
     font-weight: 200 900;
     font-style: italic;
     font-stretch: normal;
-    src: url('WOFF2/VAR/SourceSans3VF-Italic.ttf.woff2') format('woff2'),
-         url('WOFF/VAR/SourceSans3VF-Italic.ttf.woff') format('woff'),
-         url('VAR/SourceSans3VF-Italic.ttf') format('truetype');
+    src: url('WOFF2/VAR/SourceSans3VF-Italic.ttf.woff2') format('woff2-variations'),
+         url('WOFF/VAR/SourceSans3VF-Italic.ttf.woff') format('woff-variations'),
+         url('VAR/SourceSans3VF-Italic.ttf') format('truetype-variations');
 }