diff --git a/.changeset/pretty-hotels-rush.md b/.changeset/pretty-hotels-rush.md
new file mode 100644
index 0000000000..4123c08910
--- /dev/null
+++ b/.changeset/pretty-hotels-rush.md
@@ -0,0 +1,5 @@
+---
+'@xstate/react': patch
+---
+
+Fixed an issue with `process` references not being removed correctly from the UMD bundles.
diff --git a/packages/xstate-react/package.json b/packages/xstate-react/package.json
index 96a85512c8..01c8166cc0 100644
--- a/packages/xstate-react/package.json
+++ b/packages/xstate-react/package.json
@@ -73,6 +73,7 @@
     "react": "^16.12.0",
     "react-dom": "^16.12.0",
     "rollup": "^1.26.3",
+    "rollup-plugin-replace": "^2.2.0",
     "rollup-plugin-terser": "^5.1.2",
     "rollup-plugin-typescript2": "^0.25.2",
     "ts-jest": "^26.4.0",
diff --git a/packages/xstate-react/rollup.config.js b/packages/xstate-react/rollup.config.js
index 155b288c35..8e75a18e7b 100644
--- a/packages/xstate-react/rollup.config.js
+++ b/packages/xstate-react/rollup.config.js
@@ -1,5 +1,6 @@
 import { terser } from 'rollup-plugin-terser';
 import typescript from 'rollup-plugin-typescript2';
+import replace from 'rollup-plugin-replace';
 
 function createTSCofig() {
   return typescript({
@@ -23,7 +24,13 @@ function createUmdConfig({ input, output: file, name }) {
         '@xstate/react': 'XStateReact'
       }
     },
-    plugins: [createTSCofig(), terser({ include: [/^.+\.min\.js$/] })]
+    plugins: [
+      replace({
+        'process.env.NODE_ENV': JSON.stringify('production')
+      }),
+      createTSCofig(),
+      terser({ include: [/^.+\.min\.js$/] })
+    ]
   };
 }