diff --git a/requirements.txt b/requirements.txt
index fd9806ac23..f7030c1e83 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ idna==3.10
     # via
     #   anyio
     #   requests
-marshmallow==3.26.1
+marshmallow==3.26.2
     # via platformio
 packaging==24.2
     # via marshmallow