diff --git a/experiments/invariant-risk-minimization/notebooks/requirements.txt b/experiments/invariant-risk-minimization/notebooks/requirements.txt
index 84de8fd..2624921 100644
--- a/experiments/invariant-risk-minimization/notebooks/requirements.txt
+++ b/experiments/invariant-risk-minimization/notebooks/requirements.txt
@@ -1,7 +1,7 @@
 appnope==0.1.0
 attrs==19.3.0
 backcall==0.1.0
-bleach==3.1.0
+bleach==3.1.1
 cycler==0.10.0
 decorator==4.4.1
 defusedxml==0.6.0