diff --git a/requirements.txt b/requirements.txt
index b5f5c6e37d..c1084d96eb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ apispec~=3.3.0
 async-timeout~=3.0.1
 base58~=2.0.0
 Markdown~=3.1.1
-marshmallow==3.5.1
+marshmallow==3.26.2
 msgpack~=0.6.1
 prompt_toolkit~=2.0.9
 pynacl~=1.3.0