diff --git a/requirements.txt b/requirements.txt
index 8166f68d..7d979757 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,6 +10,8 @@ zss>=1.2.0
 # Plotting
 matplotlib>=3.3.1; python_version >= '3.8'
 pyvis==0.2.1
+# needs to be installed explicitly since no clear dependency is specified in pyvis->Jinja2->MarkupSafe
+MarkupSafe==2.1.1
 seaborn>=0.9.0
 imageio>=2.28.1
 Pillow>=9.5.0