diff --git a/accretionscatter/requirements.txt b/accretionscatter/requirements.txt
index fe330de..d852f50 100644
--- a/accretionscatter/requirements.txt
+++ b/accretionscatter/requirements.txt
@@ -1,6 +1,6 @@
 astropy==4.1
 Brotli==1.0.9
-certifi==2020.12.5
+certifi==2022.12.7
 chardet==4.0.0
 click==7.1.2
 cycler==0.10.0