diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index ecde7bca..c29d5aba 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,3 +1,6 @@
+v3.3.15 - Dec 9, 2015
+- Upgrade wp-cli version to 0.21.1
+
 v 3.3.14 - Nov 10, 2015
 - Fix EasyEngine installation issue
 
diff --git a/ee/core/variables.py b/ee/core/variables.py
index b1e97fcd..5cb73187 100644
--- a/ee/core/variables.py
+++ b/ee/core/variables.py
@@ -12,11 +12,11 @@ class EEVariables():
     """Intialization of core variables"""
 
     # EasyEngine version
-    ee_version = "3.3.14"
+    ee_version = "3.3.15"
 
 
     # EasyEngine packages versions
-    ee_wp_cli = "0.21.0"
+    ee_wp_cli = "0.21.1"
     ee_adminer = "4.2.1"
     ee_roundcube = "1.1.3"
     ee_vimbadmin = "3.0.12"
diff --git a/install b/install
index 82889ecd..d682967e 100644
--- a/install
+++ b/install
@@ -48,7 +48,7 @@ fi
 # Define variables for later use
 ee_branch=$1
 readonly ee_version_old="2.2.3"
-readonly ee_version_new="3.3.14"
+readonly ee_version_new="3.3.15"
 readonly ee_log_dir=/var/log/ee/
 readonly ee_install_log=/var/log/ee/install.log
 readonly ee_linux_distro=$(lsb_release -i | awk '{print $3}')
@@ -216,12 +216,30 @@ function ee_sync_db()
     fi
 }
 
+
 function secure_ee_db()
 {
     chown -R root:root /var/lib/ee/
     chmod -R 600 /var/lib/ee/
 }
 
+function ee_update_wp_cli()
+{
+    ee_lib_echo "Updating WP-CLI version to resolve compatibility issue."
+    PHP_PATH=$(which php)
+    WP_CLI_PATH=$(which wp)
+    if [ "${WP_CLI_PATH}" != "" ]; then
+        # Get WP-CLI version
+        WP_CLI_VERSION=$(${PHP_PATH} ${WP_CLI_PATH} --allow-root cli version | awk '{ print $2 }')
+        dpkg --compare-versions ${WP_CLI_VERSION} lt 0.21.1
+        # Update WP-CLI version
+        if [ "$?" == "0" ]; then
+           wget -qO ${WP_CLI_PATH} https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar
+           chmod +x ${WP_CLI_PATH}
+        fi
+    fi
+}
+
 # Install EasyEngine 3.x
 function ee_install()
 {
@@ -563,6 +581,7 @@ else
             ee_git_init | tee -ai $ee_install_log
             service nginx reload &>> /dev/null
             service php5-fpm restart &>> /dev/null
+            ee_update_wp_cli | tee -ai $ee_install_log
         else
             ee_lib_error "Not updating EasyEngine to $ee_version_new, exit status = " 1
         fi
diff --git a/setup.py b/setup.py
index 05c072dc..30d99520 100644
--- a/setup.py
+++ b/setup.py
@@ -54,7 +54,7 @@ except Exception as e:
     os.system("git config --global user.email {0}".format(ee_email))
 
 setup(name='ee',
-      version='3.3.14',
+      version='3.3.15',
       description=long_description,
       long_description=long_description,
       classifiers=[],