diff --git a/apps/desertpy-presentations/repo/matplotlib/requirements.txt b/apps/desertpy-presentations/repo/matplotlib/requirements.txt
index d33f560..2941042 100644
--- a/apps/desertpy-presentations/repo/matplotlib/requirements.txt
+++ b/apps/desertpy-presentations/repo/matplotlib/requirements.txt
@@ -1,5 +1,5 @@
 backports.ssl-match-hostname==3.4.0.2
-certifi==2015.4.28
+certifi==2022.12.7
 decorator==4.0.2
 funcsigs==0.4
 functools32==3.2.3.post2