diff --git a/FUNCTIONS.md b/FUNCTIONS.md
index b1abe8da6bfa79..d031a6be732061 100644
--- a/FUNCTIONS.md
+++ b/FUNCTIONS.md
@@ -246,16 +246,6 @@ Argument | Accepts | Description
 --- | --- | ---
 term | *seriesList/number* | Number or series to sum with the input series. If passing a seriesList it must contain exactly 1 series.  
 
-#### .testcast()
-Use holt-winters to forecast values. Basically useless. I have no idea how this works.
-
-Argument | Accepts | Description
---- | --- | ---
-count | *number* | *no help available*  
-alpha | *number* | *no help available*  
-beta | *number* | *no help available*  
-gamma | *number* | *no help available*  
-
 #### .title()
 Adds a title to the top of the plot. If called on more than 1 seriesList the last call will be used.
 
diff --git a/package.json b/package.json
index 6c1fef3f211390..1117e26dee0b3d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "timelion",
-  "version": "5.0.0-0.1.260",
+  "version": "5.0.0-0.1.261",
   "dependencies": {
     "body-parser": "^1.12.0",
     "boom": "^2.8.0",
diff --git a/series_functions/testcast.js b/series_functions/testcast.js
deleted file mode 100644
index 61f24a12603230..00000000000000
--- a/series_functions/testcast.js
+++ /dev/null
@@ -1,54 +0,0 @@
-var alter = require('../lib/alter.js');
-var offsetTime = require('../lib/offset_time.js');
-var _ = require('lodash');
-var util = require('util');
-var forecast = require('nostradamus');
-
-var Chainable = require('../lib/classes/chainable');
-module.exports = new Chainable('testcast', {
-  args: [
-    {
-      name: 'inputSeries',
-      types: ['seriesList']
-    },
-    {
-      name: 'count',
-      types: ['number']
-    },
-    {
-      name: 'alpha',
-      types: ['number']
-    },
-    {
-      name: 'beta',
-      types: ['number']
-    },
-    {
-      name: 'gamma',
-      types: ['number']
-    },
-  ],
-  help: 'Use holt-winters to forecast values. Basically useless. I have no idea how this works.',
-  fn:  function testcast(args, tlConfig) {
-    var targetSeries = tlConfig.getTargetSeries();
-
-    return alter(args, function (eachSeries, label) {
-      var count = args.byName.count;
-      var alpha = args.byName.alpha == null ? 0.5 : args.byName.alpha;
-      var beta = args.byName.beta == null ? 0.5 : args.byName.beta;
-      var gamma = args.byName.gamma == null ? 0.5 : args.byName.gamma;
-
-      var values = _.map(eachSeries.data, function (p) { return p[1]; });
-      var predictions = forecast(values, alpha, beta, gamma, count, count / 2);
-
-      _.times(count, function (i) {
-        var nextTime = offsetTime(_.last(eachSeries.data)[0], '+' + tlConfig.time.interval);
-        eachSeries.data.push([nextTime, predictions[values.length + i]]);
-      });
-
-      tlConfig.writeTargetSeries(eachSeries.data);
-
-      return eachSeries;
-    });
-  }
-});