diff --git a/src/main/java/com/ecwid/mailchimp/method/v2_0/lists/InterestGroupAddMethod.java b/src/main/java/com/ecwid/mailchimp/method/v2_0/lists/InterestGroupAddMethod.java
new file mode 100644
index 0000000..6562caf
--- /dev/null
+++ b/src/main/java/com/ecwid/mailchimp/method/v2_0/lists/InterestGroupAddMethod.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2012 Ecwid, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.ecwid.mailchimp.method.v2_0.lists;
+
+import com.ecwid.mailchimp.MailChimpAPIVersion;
+import com.ecwid.mailchimp.MailChimpMethod;
+import java.util.List;
+
+/**
+ * @author Sergio del Amo <sergio.delamo@softamo.com>
+ */
+@MailChimpMethod.Method(name = "lists/interest-group-add", version = MailChimpAPIVersion.v2_0)
+public class InterestGroupAddMethod extends ListsRelatedMethod<InterestGroupingAddResult> {
+
+    @Field
+    public String group_name;
+
+    @Field
+    public Integer grouping_id;
+}
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diff --git a/src/main/java/com/ecwid/mailchimp/method/v2_0/lists/InterestGroupAddResult.java b/src/main/java/com/ecwid/mailchimp/method/v2_0/lists/InterestGroupAddResult.java
new file mode 100644
index 0000000..810d0db
--- /dev/null
+++ b/src/main/java/com/ecwid/mailchimp/method/v2_0/lists/InterestGroupAddResult.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2012 Ecwid, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.ecwid.mailchimp.method.v2_0.lists;
+
+import com.ecwid.mailchimp.MailChimpObject;
+
+/**
+ * @author Sergio del Amo <sergio.delamo@softamo.com>
+ */
+public class InterestGroupAddResult extends MailChimpObject {
+    @Field
+    public Boolean complete;
+}
\ No newline at end of file