diff --git a/hooks/lib/lxc/hetzner.rb b/hooks/lib/lxc/hetzner.rb
index 7182b5f..930706f 100644
--- a/hooks/lib/lxc/hetzner.rb
+++ b/hooks/lib/lxc/hetzner.rb
@@ -24,12 +24,12 @@ module Lxc
     def put(path, params={})
       req = Net::HTTP::Put.new(uri_for(path))
       req.set_form_data(params)
-      resp = perform_request(req)
+      resp = perform_request(req, allow_404)
       JSON.parse(resp.body)
     end
 
-    def delete(path)
-      perform_request(Net::HTTP::Delete.new(uri_for(path)))
+    def delete(path, allow_404: false)
+      perform_request(Net::HTTP::Delete.new(uri_for(path)), allow_404: allow_404)
     end
 
     private
@@ -39,12 +39,12 @@ module Lxc
       u
     end
 
-    def perform_request(req)
+    def perform_request(req, allow_404: false)
       req.basic_auth(@user, @password)
       resp = Net::HTTP.start(BASE_URI.hostname, BASE_URI.port, use_ssl: true) do |http|
         http.request(req)
       end
-      if resp.code.start_with? "2"
+      if resp.code.start_with?("2") || (allow_404 && resp.code == "404")
         return resp
       else
         raise StandardError.new("failed to perform request for '#{req.path}': #{resp.code} - #{resp.body}")
diff --git a/hooks/update-hetzner-rdns b/hooks/update-hetzner-rdns
index 57cace3..95eb6f2 100755
--- a/hooks/update-hetzner-rdns
+++ b/hooks/update-hetzner-rdns
@@ -32,7 +32,7 @@ def update_hetzner_rdns6(user, password, domain, subnet, network)
   end
   records.each do |ip, ptr|
     puts "delete ptr: #{ip} -> #{ptr}"
-    api.delete("/rnds/#{ip}")
+    api.delete("/rnds/#{ip}", allow_404: true)
   end
 end