diff --git a/requirements/requirements_gui.txt b/requirements/requirements_gui.txt
index 9f44a14f..f2fb8780 100644
--- a/requirements/requirements_gui.txt
+++ b/requirements/requirements_gui.txt
@@ -2,3 +2,4 @@
 imageio
 pygame
 kivy
+urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability