diff --git a/Madrid/July2022/Detecting-exoplanets/requirements.txt b/Madrid/July2022/Detecting-exoplanets/requirements.txt
index cc13e01f2..db20dbd23 100644
--- a/Madrid/July2022/Detecting-exoplanets/requirements.txt
+++ b/Madrid/July2022/Detecting-exoplanets/requirements.txt
@@ -1,5 +1,5 @@
 astropy==5.0.4
-certifi==2020.6.20
+certifi==2022.12.7
 cycler==0.11.0
 fonttools==4.33.3
 kiwisolver==1.4.2