diff --git a/requirements.txt b/requirements.txt
index 7842776..d0fcb68 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 # For pinning Python packages to then be parsed by Renovate
 
-certbot ==3.3.0
-certbot-dns-cloudflare ==3.3.0
+certbot ==4.0.0
+certbot-dns-cloudflare ==4.0.0
 apprise ==1.9.3
\ No newline at end of file