diff --git a/Makefile b/Makefile
index db9d28d..0258490 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 ROOT_DIR:=$(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
 BUILD_DIR?=$(ROOT_DIR)/build
 
-DEHYDRATED_VERSION:=0bc0bd13d6abdc027c58bec12f7c2d3198d3a677
+DEHYDRATED_VERSION:=05eda91a2fbaed1e13c733230238fc68475c535e
 LUA_RESTY_SHELL_VERSION:=955243d70506c21e7cc29f61d745d1a8a718994f
 SOCKPROC_VERSION:=680121312d16dc20456b5d0fed00e2b0e160e0db
 
diff --git a/bin/letsencrypt_hooks b/bin/letsencrypt_hooks
index ff0717c..1d7a51f 100755
--- a/bin/letsencrypt_hooks
+++ b/bin/letsencrypt_hooks
@@ -72,4 +72,10 @@ exit_hook() {
   :
 }
 
-HANDLER=$1; shift; $HANDLER "$@"
+HANDLER=$1; shift;
+
+if ! command -v "$HANDLER"; then
+  exit 0
+fi
+
+$HANDLER "$@"