diff --git a/build/ol-simple.json b/build/ol-simple.json
index 27a982ee23..ed07e263c8 100644
--- a/build/ol-simple.json
+++ b/build/ol-simple.json
@@ -3,7 +3,9 @@
   "id": "ol-simple",
 
   "externs": [
+    "//json.js",
     "externs/bingmaps.js",
+    "externs/geojson.js",
     "externs/proj4js.js",
     "externs/tilejson.js"
   ],
diff --git a/build/ol-whitespace.json b/build/ol-whitespace.json
index 83294ee47c..5564f8a11e 100644
--- a/build/ol-whitespace.json
+++ b/build/ol-whitespace.json
@@ -3,7 +3,9 @@
   "id": "ol-whitespace",
 
   "externs": [
+    "//json.js",
     "externs/bingmaps.js",
+    "externs/geojson.js",
     "externs/proj4js.js",
     "externs/tilejson.js"
   ],
diff --git a/build/ol.json b/build/ol.json
index 33e8c7bde6..7a44e1cba6 100644
--- a/build/ol.json
+++ b/build/ol.json
@@ -13,8 +13,10 @@
   "css-output-file": "build/ol.css",
 
   "externs": [
+    "//json.js",
     "build/src/external/externs/types.js",
     "externs/bingmaps.js",
+    "externs/geojson.js",
     "externs/proj4js.js",
     "externs/tilejson.js"
   ],