diff --git a/requirements.txt b/requirements.txt
index 278e4c4..dbc649b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ feedgen==1.0.0
 gunicorn==23.0.0
 httpx==0.28.1
 jsonpatch==1.33
-marshmallow==3.23.2
+marshmallow==3.23.3
 pytest==8.3.4
 pytest-datadir==1.5.0
 rdflib==7.1.1