diff --git a/README.md b/README.md
index c4e56e5..0bc752a 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ Fast robust predicates for computational geometry in JavaScript. Provides reliab
 
 _Figure: non-robust vs robust `orient2d` test for points within a tiny range (2<sup>-42</sup>)._
 
-[![Build Status](https://github.com/mourner/robust-predicates/workflows/Node/badge.svg?branch=master)](https://github.com/mourner/robust-predicates/actions)
+[![Build Status](https://github.com/mourner/robust-predicates/workflows/Node/badge.svg?branch=main)](https://github.com/mourner/robust-predicates/actions)
 [![Simply Awesome](https://img.shields.io/badge/simply-awesome-brightgreen.svg)](https://github.com/mourner/projects)
 [![Browser Build](https://badgen.net/bundlephobia/minzip/robust-predicates)](https://unpkg.com/robust-predicates)
 
diff --git a/package.json b/package.json
index c3de9cc..53bcc27 100644
--- a/package.json
+++ b/package.json
@@ -23,15 +23,15 @@
     "prepublishOnly": "npm run test && rollup -c"
   },
   "devDependencies": {
-    "@rollup/plugin-terser": "^0.4.3",
-    "c8": "^7.13.0",
-    "eslint": "^8.41.0",
+    "@rollup/plugin-terser": "^0.4.4",
+    "c8": "^9.1.0",
+    "eslint": "^8.56.0",
     "eslint-config-mourner": "^3.0.0",
     "mkdirp": "^3.0.1",
     "nextafter": "^1.0.0",
     "robust-in-sphere": "^1.2.1",
     "robust-orientation": "^1.2.1",
-    "rollup": "^3.23.0"
+    "rollup": "^4.9.5"
   },
   "files": [
     "index.js",