diff --git a/Makefile b/Makefile
index 8517d19..8930721 100644
--- a/Makefile
+++ b/Makefile
@@ -28,7 +28,10 @@
         {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}; \
     '
 
-yang-lint:
+pyang:
+	pyang -v || pip install pyang
+
+yang-lint: pyang
 	#pyang --lint ./config-models/*.x/files/yang/*.yang
 	pyang --lint ./config-models/aether-1.x/files/yang/*.yang
 	pyang --lint ./config-models/aether-2.x/files/yang/*.yang
diff --git a/aether-roc-api/Chart.yaml b/aether-roc-api/Chart.yaml
index fc7d3bc..33ab0e2 100644
--- a/aether-roc-api/Chart.yaml
+++ b/aether-roc-api/Chart.yaml
@@ -7,8 +7,8 @@
 description: Aether ROC API
 kubeVersion: ">=1.15.0"
 type: application
-version: 1.2.12
-appVersion: v0.8.14
+version: 1.2.13
+appVersion: v0.8.15
 keywords:
   - aether
   - config
diff --git a/aether-roc-api/values.yaml b/aether-roc-api/values.yaml
index d54a84a..763108a 100644
--- a/aether-roc-api/values.yaml
+++ b/aether-roc-api/values.yaml
@@ -10,7 +10,7 @@
 
 image:
   repository: onosproject/aether-roc-api
-  tag: v0.8.14
+  tag: v0.8.15
   pullPolicy: IfNotPresent
   pullSecrets: []
 
diff --git a/aether-roc-gui-v4/Chart.yaml b/aether-roc-gui-v4/Chart.yaml
index b6001a7..21cd22a 100644
--- a/aether-roc-gui-v4/Chart.yaml
+++ b/aether-roc-gui-v4/Chart.yaml
@@ -7,7 +7,7 @@
 description: Aether ROC Graphical User Interface
 kubeVersion: ">=1.15.0"
 type: application
-version: 4.0.14
+version: 4.0.100
 appVersion: 4.0.0
 keywords:
   - aether
diff --git a/aether-roc-gui-v4/values.yaml b/aether-roc-gui-v4/values.yaml
index d8f3f75..fad0b6e 100644
--- a/aether-roc-gui-v4/values.yaml
+++ b/aether-roc-gui-v4/values.yaml
@@ -10,7 +10,7 @@
 
 image:
   repository: onosproject/aether-roc-gui
-  tag: v0.8.15
+  tag: v0.8.16
   pullPolicy: IfNotPresent
   pullSecrets: []
 
diff --git a/aether-roc-umbrella/Chart.yaml b/aether-roc-umbrella/Chart.yaml
index c237c7f..72df67f 100644
--- a/aether-roc-umbrella/Chart.yaml
+++ b/aether-roc-umbrella/Chart.yaml
@@ -7,7 +7,7 @@
 description: Aether ROC Umbrella chart to deploy all Aether ROC
 kubeVersion: ">=1.18.0"
 type: application
-version: 1.4.64
+version: 1.4.65
 appVersion: v0.0.0
 keywords:
   - aether
@@ -49,7 +49,7 @@
   - name: aether-roc-api
     condition: import.aether-roc-api.enabled
     repository: "file://../aether-roc-api"
-    version: 1.2.12
+    version: 1.2.13
   - name: aether-roc-websocket
     condition: import.aether-roc-websocket.enabled
     repository: "file://../aether-roc-websocket"
@@ -61,7 +61,7 @@
   - name: aether-roc-gui-v4
     condition: import.aether-roc-gui.v4.enabled
     repository: "file://../aether-roc-gui-v4"
-    version: 4.0.14
+    version: 4.0.100
   - name: sdcore-adapter
     condition: import.sdcore-adapter.v3.enabled
     repository: "file://../sdcore-adapter"