diff --git a/check_mk_api/check_mk_api-5.5.0.mkp b/check_mk_api/check_mk_api-5.5.0.mkp
deleted file mode 100644
index 4601b39a..00000000
Binary files a/check_mk_api/check_mk_api-5.5.0.mkp and /dev/null differ
diff --git a/check_mk_api/check_mk_api-5.5.1.mkp b/check_mk_api/check_mk_api-5.5.1.mkp
new file mode 100644
index 00000000..4848aa27
Binary files /dev/null and b/check_mk_api/check_mk_api-5.5.1.mkp differ
diff --git a/check_mk_api/checkmkapi.html b/check_mk_api/checkmkapi.html
index cf11bab4..cd98648c 100644
--- a/check_mk_api/checkmkapi.html
+++ b/check_mk_api/checkmkapi.html
@@ -20,10 +20,9 @@
 <a href="json.html">json</a><br>
 </td><td class="multicolumn"><a href="os.html">os</a><br>
 <a href="requests.html">requests</a><br>
-</td><td class="multicolumn"><a href="sys.html">sys</a><br>
-<a href="time.html">time</a><br>
-</td><td class="multicolumn"><a href="warnings.html">warnings</a><br>
-</td></tr></table></td></tr></table><p>
+</td><td class="multicolumn"><a href="time.html">time</a><br>
+<a href="warnings.html">warnings</a><br>
+</td><td class="multicolumn"></td></tr></table></td></tr></table><p>
 <table class="section">
 <tr class="decor index-decor heading-text">
 <td class="section-title" colspan=3>&nbsp;<br><strong class="bigsection">Classes</strong></td></tr>
diff --git a/check_mk_api/lib/python3/checkmkapi.py b/check_mk_api/lib/python3/checkmkapi.py
index 65989d54..3d66fe9d 100644
--- a/check_mk_api/lib/python3/checkmkapi.py
+++ b/check_mk_api/lib/python3/checkmkapi.py
@@ -15,7 +15,7 @@
 import os
 import json
 import time
-import sys
+# import sys
 import configparser
 import json
 
@@ -89,8 +89,8 @@ def _check_response(self, resp):
         else:
             data = {}
         etag = resp.headers.get('ETag', '').strip('"')
-        if resp.status_code >= 400:
-            sys.stderr.write("%r\n" % data)
+        # if resp.status_code >= 400:
+        #     sys.stderr.write("%r\n" % data)
         return data, etag, resp
 
     def _get_url(self, uri, data={}):
@@ -1369,7 +1369,9 @@ def create_notification_rule(self, rule_config):
         """
         data, etag, resp = self._post_url(
             "domain-types/notification_rule/collections/all",
-            data=rule_config,
+            data={
+                "rule_config": rule_config,
+            },
         )
         if resp.status_code == 200:
             return data, etag
@@ -1438,7 +1440,9 @@ def edit_notification_rule(self, rule_id, rule_config):
         """
         data, etag, resp = self._put_url(
             f"objects/notification_rule/{rule_id}",
-            data=params
+            data={
+                "rule_config": rule_config,
+            },
         )
         if resp.status_code == 200:
             return data, etag
@@ -1503,7 +1507,7 @@ def _api_request(self, api_url, params, data=None):
                 else:
                     return eval(resp.text)
             else:
-                sys.stderr.write("%s\n" % resp.text)
+                # sys.stderr.write("%s\n" % resp.text)
                 resp.raise_for_status()
 
     def view(self, view_name, **kwargs):