diff --git a/requirements.txt b/requirements.txt
index 834559e..6138ae2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ docopt==0.6.2
 dsdev-utils==1.3.0
 Eel==1.0.0a1
 executing==2.1.0
-fastjsonschema==2.20.0
+fastjsonschema==2.21.0
 fonttools==4.55.0
 future==1.0.0
 gevent==24.11.1