diff --git a/fonts/plex/plex37.css b/fonts/plex/plex37.css
index fb16f64..3df7602 100644
--- a/fonts/plex/plex37.css
+++ b/fonts/plex/plex37.css
@@ -2,6 +2,7 @@
   font-family: 'IBM Plex Serif';
   font-style: normal;
   font-weight: 700;
+  font-display: swap;
   src: local("IBM Plex Serif Bold"),
 			 local("IBMPlexSerif-Bold"),
 			 url("IBMPlexSerif-Bold.woff2") format("woff2"),
@@ -11,6 +12,7 @@
   font-family: 'IBM Plex Serif';
   font-style: normal;
   font-weight: 300;
+  font-display: swap;
   src: local("IBM Plex Serif Light"),
 			 local("IBMPlexSerif-Light"),
 			 url("IBMPlexSerif-Light.woff2") format("woff2"),