diff --git a/server/requirements.txt b/server/requirements.txt
index 3f738c08..f24267e5 100644
--- a/server/requirements.txt
+++ b/server/requirements.txt
@@ -3,7 +3,7 @@ redis==8.0.1
 pyyaml==6.0.3
 jsonschema==4.26.0
 markus-autotesting-core==0.1.0
-msgspec==0.20.0
+msgspec==0.21.1
 requests==2.34.2
 psycopg2-binary==2.9.12
 supervisor==4.3.0