diff --git a/modules/services/vector_tile.js b/modules/services/vector_tile.js
index 199eb5004..e818f8535 100644
--- a/modules/services/vector_tile.js
+++ b/modules/services/vector_tile.js
@@ -3,7 +3,7 @@ import { dispatch as d3_dispatch } from 'd3-dispatch';
 import deepEqual from 'fast-deep-equal';
 import turf_bboxClip from '@turf/bbox-clip';
 import stringify from 'fast-json-stable-stringify';
-import martinez from 'martinez-polygon-clipping';
+import * as martinez from 'martinez-polygon-clipping';
 
 import Protobuf from 'pbf';
 import vt from '@mapbox/vector-tile';
@@ -65,8 +65,9 @@ function vtToGeoJSON(data, tile, mergeCache) {
                     var merged = mergeCache[propertyhash];
                     if (merged && merged.length) {
                         var other = merged[0];
-                        var coords = martinez(
-                            feature.geometry.coordinates, other.geometry.coordinates, 1 /*UNION*/
+                        var coords = martinez.union(
+                            feature.geometry.coordinates,
+                            other.geometry.coordinates
                         );
 
                         if (!coords || !coords.length) {
diff --git a/package.json b/package.json
index 7d7f5f25f..7b1711f77 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "fast-json-stable-stringify": "2.1.0",
     "lodash-es": "~4.17.15",
     "marked": "0.8.0",
-    "martinez-polygon-clipping": "0.6.0",
+    "martinez-polygon-clipping": "0.6.2",
     "node-diff3": "1.0.0",
     "osm-auth": "1.0.2",
     "pannellum": "2.4.1",