diff --git a/machine-learning-box/multi-touch-attribution/requirements.txt b/machine-learning-box/multi-touch-attribution/requirements.txt
index 2ce15026..46728d44 100644
--- a/machine-learning-box/multi-touch-attribution/requirements.txt
+++ b/machine-learning-box/multi-touch-attribution/requirements.txt
@@ -1,7 +1,7 @@
 absl-py==0.9.0
 astunparse==1.6.3
 cachetools==4.1.1
-certifi==2020.6.20
+certifi==2023.7.22
 chardet==3.0.4
 click==7.1.2
 gast==0.3.3