diff --git a/package.json b/package.json
index 6bfb7d8..9144d9e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "d3-geo",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "Shapes and calculators for spherical coordinates.",
   "homepage": "https://d3js.org/d3-geo/",
   "repository": {