diff --git a/models/yang/mano-types.yang b/models/yang/mano-types.yang
index f54a5e9..eb38ec2 100644
--- a/models/yang/mano-types.yang
+++ b/models/yang/mano-types.yang
@@ -379,6 +379,15 @@
                   ";
                 type string;
               }
+              leaf helm-version {
+                description
+                  "Helm version to use for this helm-chart, v3 by default";
+                type enumeration {
+                  enum v2;
+                  enum v3;
+                }
+                default v3;
+              }
             }
           }
           leaf metric-service {
diff --git a/models/yang/vnfd-base.yang b/models/yang/vnfd-base.yang
index aae9b2b..8ee13c0 100644
--- a/models/yang/vnfd-base.yang
+++ b/models/yang/vnfd-base.yang
@@ -661,6 +661,15 @@
                 ";
               type string;
             }
+            leaf helm-version {
+              description
+                "Helm version to use for this helm-chart, v3 by default";
+              type enumeration {
+                enum v2;
+                enum v3;
+              }
+              default v3;
+            }
           }
 
           case juju-bundle {