diff --git a/experiments/invariant-risk-minimization/notebooks/requirements.txt b/experiments/invariant-risk-minimization/notebooks/requirements.txt
index 84de8fd..3a2781c 100644
--- a/experiments/invariant-risk-minimization/notebooks/requirements.txt
+++ b/experiments/invariant-risk-minimization/notebooks/requirements.txt
@@ -34,7 +34,7 @@ pickleshare==0.7.5
 prometheus-client==0.7.1
 prompt-toolkit==3.0.3
 ptyprocess==0.6.0
-Pygments==2.5.2
+Pygments==2.7.4
 pyparsing==2.4.6
 pyrsistent==0.15.7
 python-dateutil==2.8.1