diff --git a/tools/web-fuzzing-introspection/requirements.txt b/tools/web-fuzzing-introspection/requirements.txt
index d0d3d1c9c..5d9b36364 100644
--- a/tools/web-fuzzing-introspection/requirements.txt
+++ b/tools/web-fuzzing-introspection/requirements.txt
@@ -8,4 +8,4 @@ requests==2.32.4
 pyyaml==6.0.2
 orjson==3.10.0
 flask_smorest==0.44.0
-marshmallow==3.21.0
+marshmallow==3.26.2