diff --git a/documentation/spectral_analysis/basic_aras/requirements.txt b/documentation/spectral_analysis/basic_aras/requirements.txt
index 4c703644..d9f1855b 100644
--- a/documentation/spectral_analysis/basic_aras/requirements.txt
+++ b/documentation/spectral_analysis/basic_aras/requirements.txt
@@ -26,7 +26,7 @@ jupyter-core==4.11.2
 kiwisolver==1.1.0
 MarkupSafe==1.1.1
 matplotlib==3.1.1
-mistune==0.8.4
+mistune==3.2.1
 nbconvert==6.5.1
 nbformat==4.4.0
 notebook==6.4.12