diff --git a/README.md b/README.md
index 57b37e4..829befc 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,11 @@
 Ansible modules for Digital Energy Orchestration Technology (DECORT) platform v3.4.2 and above
 
 Note that this module may produce unreliable results when used with older DECORT API versions. 
+
+Requirements:
+    - Ansible 2.7 or higher
+    - Python 2.6 or higher
+    - PyJWT Python module
+    - requests Python module
+    - netaddr Python module
+    - DECORT cloud platform version 3.4.2 or higher
diff --git a/library/decort_disk.py b/library/decort_disk.py
index aa3fc61..d71025f 100644
--- a/library/decort_disk.py
+++ b/library/decort_disk.py
@@ -26,8 +26,9 @@ author:
      - Sergey Shubin <sergey.shubin@digitalenergy.online>
 requirements:
      - python >= 2.6
-     - PyJWT module
-     - requests module
+     - PyJWT Python module
+     - requests Python module
+     - netaddr Python module
      - decort_utils utility library (module)
      - DECORT cloud platform version 3.4.2 or higher
 notes:
diff --git a/library/decort_kvmvm.py b/library/decort_kvmvm.py
index 41424cc..1670036 100644
--- a/library/decort_kvmvm.py
+++ b/library/decort_kvmvm.py
@@ -28,8 +28,9 @@ author:
      - Sergey Shubin <sergey.shubin@digitalenergy.online>
 requirements:
      - python >= 2.6
-     - PyJWT module
-     - requests module
+     - PyJWT Python module
+     - requests Python module
+     - netaddr Python module
      - decort_utils utility library (module)
      - DECORT cloud platform version 3.4.2 or higher
 notes:
diff --git a/library/decort_osimage.py b/library/decort_osimage.py
index 559c89c..3269fd5 100644
--- a/library/decort_osimage.py
+++ b/library/decort_osimage.py
@@ -29,8 +29,9 @@ author:
      - Sergey Shubin <sergey.shubin@digitalenergy.online>
 requirements:
      - python >= 2.6
-     - PyJWT module
-     - requests module
+     - PyJWT Python module
+     - requests Python module
+     - netaddr Python module
      - decort_utils utility library (module)
      - DECORT cloud platform version 3.4.2 or higher.
 notes:
diff --git a/library/decort_pfw.py b/library/decort_pfw.py
index 9709d0d..048d719 100644
--- a/library/decort_pfw.py
+++ b/library/decort_pfw.py
@@ -26,8 +26,9 @@ author:
      - Sergey Shubin <sergey.shubin@digitalenergy.online>
 requirements:
      - python >= 2.6
-     - PyJWT module
-     - requests module
+     - PyJWT Python module
+     - requests Python module
+     - netaddr Python module
      - decort_utils utility library (module)
      - DECORT cloud platform version 3.4.2 or higher
 notes:
diff --git a/library/decort_rg.py b/library/decort_rg.py
index c542f99..0005193 100644
--- a/library/decort_rg.py
+++ b/library/decort_rg.py
@@ -26,8 +26,9 @@ author:
      - Sergey Shubin <sergey.shubin@digitalenergy.online>
 requirements:
      - python >= 2.6
-     - PyJWT module
-     - requests module
+     - PyJWT Python module
+     - requests Python module
+     - netaddr Python module
      - decort_utils utility library (module)
      - DECORT cloud platform version 3.4.2 or higher
 notes:
diff --git a/library/decort_vins.py b/library/decort_vins.py
index decd2d3..913665b 100644
--- a/library/decort_vins.py
+++ b/library/decort_vins.py
@@ -26,8 +26,9 @@ author:
      - Sergey Shubin <sergey.shubin@digitalenergy.online>
 requirements:
      - python >= 2.6
-     - PyJWT module
-     - requests module
+     - PyJWT Python module
+     - requests Python module
+     - netaddr Python module
      - decort_utils utility library (module)
      - DECORT cloud platform version 3.4.2 or higher
 notes:
diff --git a/module_utils/decort_utils.py b/module_utils/decort_utils.py
index 54c0e50..684fee1 100644
--- a/module_utils/decort_utils.py
+++ b/module_utils/decort_utils.py
@@ -22,6 +22,13 @@ method with properly configured arguments.
 
 NOTE: this utility library requires DECORT platform version 3.4.0 or higher. 
 It is not compatible with older versions.
+
+Requirements:
+- python >= 2.6
+- PyJWT Python module
+- requests Python module
+- netaddr Python module
+- DECORT cloud platform version 3.4.2 or higher
 """
 
 import copy