diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000000000000000000000000000000000000..3891dc608fcad95977c617a314b992a2ea01abee
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,20 @@
+# Contributing
+
+If you have any issues or ideas for improvement you can send me an email to _thl-cmk[at]outlook[dot]com_.
+
+For some fixes/improvements I migth need a _snmpwalk_ fom the device in question.
+This must contain
+
+- .1.3.6.1.2.1.1.1 sysDescr 
+- .1.3.6.1.2.1.1.2 sysObjectID
+
+and all the SNMP OIDs used in the plugin.
+
+If you run the _snmpwalk_ command, please uses these options _**-ObentU**_ in addition to your snmp options like community, version etc.
+For example:
+```
+snmpwalk -v2c -c public -ObentU 10.10.10.10 .1.3.6.1.2.1.1.1 > hostname.snmpwalk
+snmpwalk -v2c -c public -ObentU 10.10.10.10 .1.3.6.1.2.1.1.2 >> hostname.snmpwalk
+snmpwalk -v2c -c public -ObentU 10.10.10.10 .1.3.6.1.4.1.2620.1.6.20.8.1 >> hostname.snmpwalk
+snmpwalk -v2c -c public -ObentU 10.10.10.10 .1.3.6.1.4.1.2620.1.6.20.10.1 >> hostname.snmpwalk
+```
diff --git a/README.md b/README.md
index 5687df38ef3665e9325b1bb269eded4ebba0f181..e40dd69cfc11d78392aa76b6060a604b44bafff2 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# inventory of Check Point Hardware Appliances
+# inventory of Check Point Hardware Appliances [(Download the MKP package)](/../../../-/raw/master/inv_checkpoint_updates.mkp "Download MKP package")
 
 **Note: this package is for CheckMK version 2.x. For other versions see the corresponding branch.**
 
@@ -6,5 +6,10 @@ adds the following to the inventory:
 
 * Available/installed/recommended updates
 
+---
+#### Want to contribute?
+Nice ;-) Have a look at the [contribution guidelines](CONTRIBUTING.md "Contributing")
+---
+
 Here is a sample inventory
 ![sample Check point inventory](/doc/sample.png?raw=true "sample Check Point inventory")
diff --git a/agent_based/inv_checkpoint_updates.py b/agent_based/inv_checkpoint_updates.py
index 2774caa8503faa93277d18bac6032517725889f1..213069d72da6de95ae764b4055a6d4fbd30857c7 100644
--- a/agent_based/inv_checkpoint_updates.py
+++ b/agent_based/inv_checkpoint_updates.py
@@ -36,11 +36,11 @@
 
 from typing import List, NamedTuple
 
-from .agent_based_api.v1.type_defs import (
+from cmk.base.plugins.agent_based.agent_based_api.v1.type_defs import (
     StringTable,
     InventoryResult,
 )
-from .agent_based_api.v1 import (
+from cmk.base.plugins.agent_based.agent_based_api.v1 import (
     register,
     SNMPTree,
     TableRow,
diff --git a/inv_checkpoint_updates.mkp b/inv_checkpoint_updates.mkp
index 518802330bafe01e2e2a097226b2ca731fef5c01..4c928aa15fbb7501689f4e41d91c6db442c77721 100644
Binary files a/inv_checkpoint_updates.mkp and b/inv_checkpoint_updates.mkp differ
diff --git a/packages/inv_checkpoint_updates b/packages/inv_checkpoint_updates
index 144f477a7753587aa8ae881f456e2f25e5a6df55..bb685002c89ab4c2b3f921e946629ea77a1aba3f 100644
--- a/packages/inv_checkpoint_updates
+++ b/packages/inv_checkpoint_updates
@@ -11,5 +11,5 @@
  'title': 'Check Point appliance avilable updates inventory plugin',
  'version': '20210208.v.0.1',
  'version.min_required': '2.0.0b8',
- 'version.packaged': '2.0.0p1',
+ 'version.packaged': '2021.07.14',
  'version.usable_until': None}
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