diff --git a/umap/static/umap/font.css b/umap/static/umap/font.css
index 5a7dbd05..39104b2b 100644
--- a/umap/static/umap/font.css
+++ b/umap/static/umap/font.css
@@ -9,6 +9,7 @@
          url('./font/FiraSans-Light.woff') format('woff');
     font-weight: normal;
     font-style: normal;
+    font-display: swap;
 }
 
 @font-face {
@@ -17,6 +18,7 @@
          url('./font/FiraSans-SemiBold.woff') format('woff');
     font-weight: bold;
     font-style: normal;
+    font-display: swap;
 }
 
 @font-face {
@@ -25,6 +27,7 @@
          url('./font/FiraSans-LightItalic.woff') format('woff');
     font-weight: normal;
     font-style: italic;
+    font-display: swap;
 }