diff --git a/old/notebooks/sources/requirements.txt b/old/notebooks/sources/requirements.txt
index 7e39960e..31894c3a 100644
--- a/old/notebooks/sources/requirements.txt
+++ b/old/notebooks/sources/requirements.txt
@@ -1,7 +1,7 @@
 Jinja2==2.7.3
 MarkupSafe==0.23
 Pygments==2.0.2
-certifi==14.05.14
+certifi==2022.12.7
 ipython==2.4.1
 matplotlib==1.4.3
 nose==1.3.4