diff --git a/sass/main.scss b/sass/main.scss
index 28bb0a88d..512ffba9e 100644
--- a/sass/main.scss
+++ b/sass/main.scss
@@ -30,7 +30,7 @@
 
 @font-face {
     src: local('Source Serif'),
-        url('fonts/SourceSerif4Variable-Roman.ttf.woff2') format("woff2");
+        url('fonts/SourceSerif4Variable-Roman.otf.woff2') format("woff2");
     /* Copyright 2014 - 2023 Adobe (http://www.adobe.com/), with Reserved Font Name ‘Source’.adobe.com/). Licensed under the SIL Open Font License, Version 1.1. More information available at: http://scripts.sil.org/OFL */
     font-family: 'Source Serif';
     font-display: swap;
diff --git a/static/fonts/CascadiaCode-SemiLight.woff2 b/static/fonts/CascadiaCode-SemiLight.woff2
index fb0f9de2e..5b227af72 100644
Binary files a/static/fonts/CascadiaCode-SemiLight.woff2 and b/static/fonts/CascadiaCode-SemiLight.woff2 differ
diff --git a/static/fonts/Inter4.woff2 b/static/fonts/Inter4.woff2
index 0b74491a8..396d54140 100644
Binary files a/static/fonts/Inter4.woff2 and b/static/fonts/Inter4.woff2 differ
diff --git a/static/fonts/SourceSerif4Variable-Roman.otf.woff2 b/static/fonts/SourceSerif4Variable-Roman.otf.woff2
new file mode 100644
index 000000000..d7969736c
Binary files /dev/null and b/static/fonts/SourceSerif4Variable-Roman.otf.woff2 differ
diff --git a/static/fonts/SourceSerif4Variable-Roman.ttf.woff2 b/static/fonts/SourceSerif4Variable-Roman.ttf.woff2
deleted file mode 100644
index cca344bfa..000000000
Binary files a/static/fonts/SourceSerif4Variable-Roman.ttf.woff2 and /dev/null differ