diff --git a/GUI/requirements.txt b/GUI/requirements.txt
index 586a50f..71bd4ad 100644
--- a/GUI/requirements.txt
+++ b/GUI/requirements.txt
@@ -51,7 +51,7 @@ jupyterlab-widgets==1.0.0
 kiwisolver==1.3.1
 MarkupSafe==1.1.1
 matplotlib==3.3.4
-mistune==0.8.4
+mistune==2.0.3
 mpi4py @ file:///home/conda/feedstock_root/build_artifacts/mpi4py_1611037859652/work
 MPILogger==0.1
 msgpack==1.0.2