diff --git a/experiments/invariant-risk-minimization/notebooks/requirements.txt b/experiments/invariant-risk-minimization/notebooks/requirements.txt
index 84de8fd..8b67092 100644
--- a/experiments/invariant-risk-minimization/notebooks/requirements.txt
+++ b/experiments/invariant-risk-minimization/notebooks/requirements.txt
@@ -21,7 +21,7 @@ jupyterlab-server==1.0.6
 kiwisolver==1.1.0
 MarkupSafe==1.1.1
 matplotlib==3.1.3
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.4
 notebook==6.0.3