diff --git a/experiments/invariant-risk-minimization/notebooks/requirements.txt b/experiments/invariant-risk-minimization/notebooks/requirements.txt
index 84de8fd..606c858 100644
--- a/experiments/invariant-risk-minimization/notebooks/requirements.txt
+++ b/experiments/invariant-risk-minimization/notebooks/requirements.txt
@@ -24,7 +24,7 @@ matplotlib==3.1.3
 mistune==0.8.4
 nbconvert==5.6.1
 nbformat==5.0.4
-notebook==6.0.3
+notebook==6.4.12
 numpy==1.18.1
 pandas==1.0.1
 pandocfilters==1.4.2