diff --git a/requirements.txt b/requirements.txt
index 5e25e9e..65ddae1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -78,4 +78,4 @@ typing-extensions==4.5.0  # via Cobra2D (./setup.cfg), pydantic
 urllib3==1.26.15          # via requests
 wcwidth==0.2.6            # via prettytable, prompt-toolkit
 widgetsnbextension==4.0.5  # via ipywidgets
-xmlschema==2.2.2          # via Cobra2D (./setup.cfg)
+xmlschema==4.3.2          # via Cobra2D (./setup.cfg)