diff --git a/README.md b/README.md
index b76ad2f..80ceb5e 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ Requirements
 | Requirement                        | Version/Comment |
 |:-----------------------------------|:----------------|
 | Mirantis OpenStack compatibility   | 7.0, 8.0, 9.0   |
-| Zabbix plugin for Fuel             | 2.6.0           |
+| Zabbix plugin for Fuel             | 2.5.1           |
 | SNMP trap daemon for Zabbix plugin | 1.1.0           |
 
 Installation Guide
@@ -56,7 +56,7 @@ follow these steps:
         # fuel plugins
         id | name                               | version | package_version
         ---|------------------------------------|---------|----------------
-        1  | zabbix_monitoring                  | 2.6.0   | 3.0.0
+        1  | zabbix_monitoring                  | 2.5.1   | 3.0.0
         2  | zabbix_snmptrapd                   | 1.1.0   | 3.0.0
         3  | zabbix_monitoring_extreme_networks | 1.1.0   | 3.0.0
 
diff --git a/doc/plugin-guide/source/description.rst b/doc/plugin-guide/source/description.rst
index 974e252..7d3d7df 100644
--- a/doc/plugin-guide/source/description.rst
+++ b/doc/plugin-guide/source/description.rst
@@ -19,7 +19,7 @@ Requirements
 Requirement                        Version/Comment
 ================================== ================
 Fuel                               7.0, 8.0 and 9.0
-Zabbix plugin for Fuel             2.6.0
+Zabbix plugin for Fuel             2.5.1
 SNMP trap daemon for Zabbix plugin 1.1.0
 ================================== ================
 
diff --git a/doc/plugin-guide/source/installation.rst b/doc/plugin-guide/source/installation.rst
index b1455cc..36dbb44 100644
--- a/doc/plugin-guide/source/installation.rst
+++ b/doc/plugin-guide/source/installation.rst
@@ -26,7 +26,7 @@ follow these steps:
    Fuel Master node using ssh. If you do not have the Fuel Master node yet,
    see `Quick Start Guide <https://software.mirantis.com/quick-start/>`_::
 
-    # scp zabbix_monitoring-2.6-2.6.0-1.noarch.rpm \
+    # scp zabbix_monitoring-2.5-2.5.1-1.noarch.rpm \
       root@<Fuel_Master_IP>:/tmp
     # scp zabbix_snmptrapd-1.1-1.1.0-1.noarch.rpm \
       root@<Fuel_Master_IP>:/tmp
@@ -38,18 +38,18 @@ follow these steps:
 
     # cd /tmp
     # fuel plugins --install \
-      zabbix_monitoring-2.6-2.6.0-1.noarch.rpm
+      zabbix_monitoring-2.5-2.5.1-1.noarch.rpm
     # fuel plugins --install \
       zabbix_snmptrapd-1.1-1.1.0-1.noarch.rpm
     # fuel plugins --install \
       zabbix_monitoring_extreme_networks-1.1-1.1.0-1.noarch.rpm
 
-6# Make sure the plugins were installed correctly::
+#. Make sure the plugins were installed correctly::
 
     # fuel plugins
     id | name                               | version  | package_version
     ---|------------------------------------|----------|----------------
-    1  | zabbix_monitoring                  | 2.6.0    | 3.0.0
+    1  | zabbix_monitoring                  | 2.5.1    | 3.0.0
     2  | zabbix_snmptrapd                   | 1.1.0    | 3.0.0
     3  | zabbix_monitoring_extreme_networks | 1.1.0    | 3.0.0
 
@@ -59,8 +59,7 @@ Extreme Networks hardware monitoring extension removal
 To uninstall Extreme Networks hardware monitoring extension for Zabbix plugin,
 follow these steps:
 
-#. Delete all Environments in which Extreme Networks hardware monitoring extension
-for Zabbix plugin has been enabled.
+#. Delete all environments in which Extreme Networks hardware monitoring extension for Zabbix plugin has been enabled.
 
 #. Uninstall the plugin::
 
diff --git a/doc/specs/source/index.rst b/doc/specs/source/index.rst
index 8cd5c77..afe8651 100644
--- a/doc/specs/source/index.rst
+++ b/doc/specs/source/index.rst
@@ -120,7 +120,7 @@ Dependencies
 ============
 
 * Fuel 7.0, 8.0 and 9.0
-* Zabbix plugin for Fuel 2.6.0
+* Zabbix plugin for Fuel 2.5.1
 * SNMP trap daemon for Zabbix plugin 1.1.0
 
 Testing