diff --git a/lambda_functions/process/make_pdf/requirements.txt b/lambda_functions/process/make_pdf/requirements.txt
index e17c28612..66630e26e 100644
--- a/lambda_functions/process/make_pdf/requirements.txt
+++ b/lambda_functions/process/make_pdf/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2019.9.11
+certifi==2022.12.7
 chardet==3.0.4
 geojson==2.5.0
 idna==2.8