diff --git a/package.json b/package.json
index 5da8cabcd..0c1fbd96e 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "@mapbox/gl-matrix": "^0.0.1",
     "@mapbox/mapbox-gl-supported": "^1.3.0",
     "@mapbox/point-geometry": "^0.1.0",
-    "@mapbox/shelf-pack": "^3.1.0",
+    "@mapbox/shelf-pack": "=3.1.0",
     "@mapbox/tiny-sdf": "^1.1.0",
     "@mapbox/unitbezier": "^0.0.0",
     "@mapbox/vector-tile": "^1.3.0",