diff --git a/bundles/letsencrypt/files/dns_challenge_hook.sh b/bundles/letsencrypt/files/dns_challenge_hook.sh
deleted file mode 100644
index c374afc..0000000
--- a/bundles/letsencrypt/files/dns_challenge_hook.sh
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/env bash
-
-set -e
-set -u
-set -o pipefail
-
-ACME_ZONE=${acme_hostname}
-SERVER=${bind_hostname}
-OPERATION=$1
-DOMAIN=$2
-TOKEN=$4
-TTL=300
-
-case "$1" in
-  "deploy_challenge")
-    printf "
-      server 127.0.0.1
-      zone $ACME_ZONE.
-      update add $DOMAIN.$ACME_ZONE. 600 IN TXT \"$TOKEN\"
-      send
-    " | nsupdate -y $TOKEN
-    ;;
-  "clean_challenge")
-    printf "
-      server 127.0.0.1
-      zone $ACME_ZONE.
-      update delete $DOMAIN.$ACME_ZONE. TXT
-      send
-    " | nsupdate -y $TOKEN
-    ;;
-  "deploy_cert")
-    ;;
-  "unchanged_cert")
-    ;;
-  "startup_hook")
-    ;;
-  "exit_hook")
-    ;;
-esac
-
-exit 0
diff --git a/bundles/letsencrypt/files/hook.sh b/bundles/letsencrypt/files/hook.sh
index 55916a6..6d48dd1 100644
--- a/bundles/letsencrypt/files/hook.sh
+++ b/bundles/letsencrypt/files/hook.sh
@@ -17,7 +17,7 @@ deploy_challenge() {
   echo "$cmd"
   echo "$cmd" | nsupdate -y $KEY
   
-  sleep 20
+  sleep 30
 }
 
 clean_challenge() {