diff --git a/requirements.txt b/requirements.txt
index 7202792e..87e53243 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,6 +19,6 @@ pytest==7.1.3
 python-rapidjson==1.9
 toml==0.10.2
 pyfaidx==0.5.9.5
-marshmallow==3.14.1
+marshmallow==3.26.2
 marshmallow-dataclass==8.5.3
 typeguard==2.13.3