diff --git a/api/src/main/java/org/apache/cloudstack/api/response/HostTagResponse.java b/api/src/main/java/org/apache/cloudstack/api/response/HostTagResponse.java
index 790b4a51bd79..f772da6dcb66 100644
--- a/api/src/main/java/org/apache/cloudstack/api/response/HostTagResponse.java
+++ b/api/src/main/java/org/apache/cloudstack/api/response/HostTagResponse.java
@@ -36,7 +36,7 @@ public class HostTagResponse extends BaseResponse {
     private String name;
 
     @SerializedName(ApiConstants.IS_IMPLICIT)
-    @Param(description = "true if the host tag is implicit")
+    @Param(description = "true if the host tag is implicit", since = "4.20.0")
     private boolean isImplicit;
 
     public String getId() {