diff --git a/main.go b/main.go
index 5894bc4a..2a220a4c 100644
--- a/main.go
+++ b/main.go
@@ -28,6 +28,7 @@ func configure(app *aero.Application) *aero.Application {
 	// Content security policy
 	app.ContentSecurityPolicy.Set("img-src", "https: data:")
 	app.ContentSecurityPolicy.Set("connect-src", "https: wss: data:")
+	app.ContentSecurityPolicy.Set("font-src", "https: data:")
 
 	// Security
 	configureHTTPS(app)