diff --git a/PnP Resection - Lavenberg Marquart Optim/requirements.txt b/PnP Resection - Lavenberg Marquart Optim/requirements.txt
index e15e35f..211148d 100644
--- a/PnP Resection - Lavenberg Marquart Optim/requirements.txt	
+++ b/PnP Resection - Lavenberg Marquart Optim/requirements.txt	
@@ -18,7 +18,7 @@ jupyter-core==4.5.0
 kiwisolver==1.1.0
 MarkupSafe==1.1.1
 matplotlib==3.1.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.0
 nbformat==4.4.0
 notebook==6.0.1