diff --git a/README.md b/README.md
index ce02b85..1c8a007 100644
--- a/README.md
+++ b/README.md
@@ -51,7 +51,7 @@ const feature = geojson2h3.h3SetToFeature(hexagons);
 ## geojson2h3
 
 * [geojson2h3](#module_geojson2h3)
-    * [.featureToH3Set(feature, resolution)](#module_geojson2h3.featureToH3Set) ⇒ <code>Array.&lt;String&gt;</code>
+    * [.featureToH3Set(feature, resolution, [options])](#module_geojson2h3.featureToH3Set) ⇒ <code>Array.&lt;String&gt;</code>
     * [.h3ToFeature(hexAddress, [properties])](#module_geojson2h3.h3ToFeature) ⇒ <code>Feature</code>
     * [.h3SetToFeature(hexagons, [properties])](#module_geojson2h3.h3SetToFeature) ⇒ <code>Feature</code>
     * [.h3SetToMultiPolygonFeature(hexagons, [properties])](#module_geojson2h3.h3SetToMultiPolygonFeature) ⇒ <code>Feature</code>
@@ -62,7 +62,7 @@ const feature = geojson2h3.h3SetToFeature(hexagons);
 
 <a name="module_geojson2h3.featureToH3Set"></a>
 
-### geojson2h3.featureToH3Set(feature, resolution) ⇒ <code>Array.&lt;String&gt;</code>
+### geojson2h3.featureToH3Set(feature, resolution, [options]) ⇒ <code>Array.&lt;String&gt;</code>
 Convert a GeoJSON feature to a set of hexagons. *Only hexagons whose centers
 fall within the feature will be included.* Note that conversion from GeoJSON
 is lossy; the resulting hexagon set only approximately describes the original
@@ -82,6 +82,7 @@ the `ensureOutput` option.
 | --- | --- | --- |
 | feature | <code>Object</code> | Input GeoJSON: type must be either `Feature` or                              `FeatureCollection`, and geometry type must be                              either `Polygon` or `MultiPolygon` |
 | resolution | <code>Number</code> | Resolution of hexagons, between 0 and 15 |
+| [options] | <code>Object</code> | Options |
 | [options.ensureOutput] | <code>Boolean</code> | Whether to ensure that at least one                              cell is returned in the set |
 
 
diff --git a/package.json b/package.json
index b2b6a5c..89d3606 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "geojson2h3",
   "description": "Conversion utilities between H3 indexes and GeoJSON",
-  "version": "1.1.1",
+  "version": "1.2.0",
   "author": "Nick Rabinowitz <nickr@uber.com>",
   "keywords": [
     "h3",
diff --git a/src/geojson2h3.js b/src/geojson2h3.js
index 5fdda6e..89fff93 100644
--- a/src/geojson2h3.js
+++ b/src/geojson2h3.js
@@ -104,6 +104,7 @@ function featureCollectionToH3Set(featureCollection, resolution) {
  *                              `FeatureCollection`, and geometry type must be
  *                              either `Polygon` or `MultiPolygon`
  * @param  {Number} resolution  Resolution of hexagons, between 0 and 15
+ * @param  {Object} [options]   Options
  * @param  {Boolean} [options.ensureOutput] Whether to ensure that at least one
  *                              cell is returned in the set
  * @return {String[]}           H3 indexes