diff --git a/examples/xr-transformer-neurips21/requirements.txt b/examples/xr-transformer-neurips21/requirements.txt
index e4faf75..1064064 100644
--- a/examples/xr-transformer-neurips21/requirements.txt
+++ b/examples/xr-transformer-neurips21/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2021.5.30
+certifi==2023.7.22
 charset-normalizer==2.0.6
 click==8.0.1
 docopt==0.6.2