diff --git a/backend/requirements.txt b/backend/requirements.txt
index cd3ef7c33..fe15f738f 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -10,4 +10,4 @@ python-dateutil==2.8.2
 pytoml==0.1.21
 redis==4.5.1
 swagger-ui-bundle==0.0.9
-zstandard==0.20.0
+zstandard==0.21.0