diff --git a/HISTORY.md b/HISTORY.md
index 56a3270a..9fb85421 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -2,6 +2,13 @@
 http://visjs.org
 
 
+## not yet released, version 4.0.1-SNAPSHOT
+
+### Timeline, Graph2d
+
+- Fixed #872: error about deprecated function `unsubscribe`.
+
+
 ## 2015-05-22, version 4.0.0
 
 ### General
diff --git a/lib/timeline/component/ItemSet.js b/lib/timeline/component/ItemSet.js
index 0d8a96a4..0760ddef 100644
--- a/lib/timeline/component/ItemSet.js
+++ b/lib/timeline/component/ItemSet.js
@@ -708,7 +708,7 @@ ItemSet.prototype.setGroups = function(groups) {
   // unsubscribe from current dataset
   if (this.groupsData) {
     util.forEach(this.groupListeners, function (callback, event) {
-      me.groupsData.unsubscribe(event, callback);
+      me.groupsData.off(event, callback);
     });
 
     // remove all drawn groups
diff --git a/lib/timeline/component/LineGraph.js b/lib/timeline/component/LineGraph.js
index 891f1954..ec3108e3 100644
--- a/lib/timeline/component/LineGraph.js
+++ b/lib/timeline/component/LineGraph.js
@@ -324,7 +324,7 @@ LineGraph.prototype.setGroups = function(groups) {
   // unsubscribe from current dataset
   if (this.groupsData) {
     util.forEach(this.groupListeners, function (callback, event) {
-      me.groupsData.unsubscribe(event, callback);
+      me.groupsData.off(event, callback);
     });
 
     // remove all drawn groups