diff --git a/packages/npm-packages/ruby-3_2-wasm-wasi/src/browser.script.js b/packages/npm-packages/ruby-3_2-wasm-wasi/src/browser.script.js
index 0a9592804a..9c7dcbadfc 100644
--- a/packages/npm-packages/ruby-3_2-wasm-wasi/src/browser.script.js
+++ b/packages/npm-packages/ruby-3_2-wasm-wasi/src/browser.script.js
@@ -1,4 +1,12 @@
 import { main } from "@ruby/wasm-wasi/dist/browser.script"
 import * as pkg from "../package.json"
 
-main(pkg)
+main(pkg, {
+  env: {
+    // WORKAROUND(katei): setjmp consumes a LOT of stack in Ruby 3.2,
+    // so we extend default Fiber stack size as well as main stack
+    // size allocated by wasm-ld's --stack-size. 8MB is enough for
+    // most cases. See https://github.com/ruby/ruby.wasm/issues/273
+    "RUBY_FIBER_MACHINE_STACK_SIZE": "8388608"
+  }
+})
diff --git a/packages/npm-packages/ruby-wasm-wasi/src/browser.script.ts b/packages/npm-packages/ruby-wasm-wasi/src/browser.script.ts
index 65d6364810..8c00940522 100644
--- a/packages/npm-packages/ruby-wasm-wasi/src/browser.script.ts
+++ b/packages/npm-packages/ruby-wasm-wasi/src/browser.script.ts
@@ -1,11 +1,14 @@
 import { DefaultRubyVM } from "./browser";
 
-export const main = async (pkg: { name: string; version: string }) => {
+export const main = async (
+  pkg: { name: string; version: string },
+  options?: Parameters<typeof DefaultRubyVM>[1],
+) => {
   const response = fetch(
     `https://cdn.jsdelivr.net/npm/${pkg.name}@${pkg.version}/dist/ruby+stdlib.wasm`,
   );
   const module = await compileWebAssemblyModule(response);
-  const { vm } = await DefaultRubyVM(module);
+  const { vm } = await DefaultRubyVM(module, options);
 
   vm.printVersion();