diff --git a/packages/physics/package.json b/packages/physics/package.json
index 99de573..dd43882 100644
--- a/packages/physics/package.json
+++ b/packages/physics/package.json
@@ -38,7 +38,7 @@
     "kefir": "^3.8.8",
     "matter-js": "0.14.2",
     "poly-decomp": "0.3.0",
-    "proton-js": "^3.1.2"
+    "proton-engine": "^4.2.1"
   },
   "devDependencies": {
     "@neutrinojs/airbnb-base": "^9.4.0",
diff --git a/packages/physics/src/proton/proton.js b/packages/physics/src/proton/proton.js
index ddc89aa..b1b1090 100644
--- a/packages/physics/src/proton/proton.js
+++ b/packages/physics/src/proton/proton.js
@@ -1,4 +1,4 @@
-import Proton_ from 'proton-js';
+import Proton_ from 'proton-engine';
 
 export default class Proton extends Proton_ {
 
diff --git a/packages/physics/yarn.lock b/packages/physics/yarn.lock
index ad29849..8896cbb 100644
--- a/packages/physics/yarn.lock
+++ b/packages/physics/yarn.lock
@@ -6019,10 +6019,10 @@ prop-types@^15.7.2:
     object-assign "^4.1.1"
     react-is "^16.8.1"
 
-proton-js@^3.1.2:
-  version "3.1.2"
-  resolved "https://npm.i12e.cha0s.io/proton-js/-/proton-js-3.1.2.tgz#dd78740ee9584b951da9b4feeb38b43f063e85b4"
-  integrity sha512-080ghT1uT9ntPUFo3upt4x2rHIY5FAaluzYgcHikz6dno97CgLSvJbfGpvap+4jCT6yxl4itXEr/9TTKZvA7hA==
+proton-engine@^4.2.1:
+  version "4.2.1"
+  resolved "https://npm.i12e.cha0s.io/proton-engine/-/proton-engine-4.2.1.tgz#db938e4f673ddbd91ac70628b0733283a4571ef7"
+  integrity sha512-c72hgcnwMyyvUoy7Jq/HX3HQZnAo5MUNvFbyZHiWZrwcERX9+lYzM9YyT0iueXVAJpt+r8nrPan9F3HTXj7IsA==
 
 proxy-addr@^2.0.6, proxy-addr@~2.0.5:
   version "2.0.6"