diff --git a/fhem/CHANGED b/fhem/CHANGED
index 9deecc403..b2407b9c1 100644
--- a/fhem/CHANGED
+++ b/fhem/CHANGED
@@ -1,5 +1,6 @@
 # Add changes at the top of the list. Keep it in ASCII, and 80-char wide.
 # Do not insert empty lines here, update check depends on it
+ - change: 74_NUKIDevice: Add UTF-8 encoding for reading bulk updates
  - change: 73_NUKIBridge/74_NUKIDevice: Key changes include enhancements to the
                          command handling within the Bridge module, replacing
                          the `given/when` construct with a more flexible
diff --git a/fhem/FHEM/74_NUKIDevice.pm b/fhem/FHEM/74_NUKIDevice.pm
index b795a4e58..2b856bf30 100644
--- a/fhem/FHEM/74_NUKIDevice.pm
+++ b/fhem/FHEM/74_NUKIDevice.pm
@@ -271,7 +271,7 @@ sub Initialize {
   ],
   "release_status": "stable",
   "license": "GPL_2",
-  "version": "v2.1.0",
+  "version": "v2.1.1",
   "author": [
     "Marko Oldenburg <leongaultier@gmail.com>"
   ],
diff --git a/fhem/lib/FHEM/Devices/Nuki/Device.pm b/fhem/lib/FHEM/Devices/Nuki/Device.pm
index 91766f429..4bb6637e0 100644
--- a/fhem/lib/FHEM/Devices/Nuki/Device.pm
+++ b/fhem/lib/FHEM/Devices/Nuki/Device.pm
@@ -30,7 +30,7 @@ use strict;
 use warnings;
 
 #use experimental qw( switch );
-
+use Encode;
 use FHEM::Meta;
 
 use GPUtils qw(GP_Import);
@@ -550,7 +550,8 @@ sub WriteReadings {
     while ( ( $t, $v ) = each %{$decode_json} ) {
 
         # generische readings (alles außer spezielle Felder)
-        ::readingsBulkUpdate( $hash, $t, $v )
+        ::readingsBulkUpdate( $hash, $t,
+            Encode::is_utf8($v) ? Encode::encode( "UTF-8", $v ) : $v )
           if ( $t ne 'state'
             && $t ne 'mode'
             && $t ne 'deviceType'