diff --git a/letsencrypt/acme.nix b/letsencrypt/acme.nix
index 7e59d5c..ce6587a 100644
--- a/letsencrypt/acme.nix
+++ b/letsencrypt/acme.nix
@@ -7,6 +7,7 @@ let
       CF_API_KEY=$TOKEN
       CLOUDFLARE_DNS_API_TOKEN=$TOKEN
       CLOUDFLARE_ZONE_API_TOKEN=$TOKEN
+      CLOUDFLARE_POLLING_INTERVAL=10
     '';
     DESEC = "DESEC_TOKEN=$TOKEN";
   };