diff --git a/updater/requirements.txt b/updater/requirements.txt
index aa75a6a8..a272aaf6 100644
--- a/updater/requirements.txt
+++ b/updater/requirements.txt
@@ -32,4 +32,4 @@ varint==1.0.2
 web3==5.0.0
 websockets==7.0
 ed25519==1.5
-marshmallow==3.18.0
+marshmallow==3.26.2