diff --git a/external_libraries.py b/external_libraries.py
index b5055abeb..f267c7f7e 100644
--- a/external_libraries.py
+++ b/external_libraries.py
@@ -31,10 +31,10 @@ EXTERNAL_FONTS = [
 ]
 
 EXTERNAL_CSS_FONTS = [
-  'cdn.core-os.net/icons/core-icons.eot',
-  'cdn.core-os.net/icons/core-icons.woff',
-  'cdn.core-os.net/icons/core-icons.ttf',
-  'cdn.core-os.net/icons/core-icons.svg',
+  's3.amazonaws.com/cdn.core-os.net/icons/core-icons.eot',
+  's3.amazonaws.com/cdn.core-os.net/icons/core-icons.woff',
+  's3.amazonaws.com/cdn.core-os.net/icons/core-icons.ttf',
+  's3.amazonaws.com/cdn.core-os.net/icons/core-icons.svg',
 ]