diff --git a/.changeset/seven-seahorses-bake.md b/.changeset/seven-seahorses-bake.md
new file mode 100644
index 00000000000..9117786fef0
--- /dev/null
+++ b/.changeset/seven-seahorses-bake.md
@@ -0,0 +1,5 @@
+---
+'@shopify/app': minor
+---
+
+Use Shopify Functions Javy plugin instead of default Javy plugin for building JS Shopify Functions
diff --git a/.gitignore b/.gitignore
index 13df16cc1c8..499fc2c132b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -155,6 +155,7 @@ packaging/dist
 cloudflared*
 function-runner*
 javy*
+shopify_functions_javy_v*.wasm
 
 # Vitest vscode extension autogenerated files
 index.d.ts
diff --git a/packages/app/src/cli/services/function/binaries.test.ts b/packages/app/src/cli/services/function/binaries.test.ts
index 7656cd9e2f0..80bc845d5cd 100644
--- a/packages/app/src/cli/services/function/binaries.test.ts
+++ b/packages/app/src/cli/services/function/binaries.test.ts
@@ -135,9 +135,9 @@ describe('javy', () => {
 
 describe('javy-plugin', () => {
   test('properties are set correctly', () => {
-    expect(javyPlugin.name).toBe('javy_quickjs_provider_v3')
-    expect(javyPlugin.version).match(/^v\d.\d.\d$/)
-    expect(javyPlugin.path).toMatch(/(\/|\\)javy_quickjs_provider_v3.wasm$/)
+    expect(javyPlugin.name).toBe('shopify_functions_javy_v1')
+    expect(javyPlugin.version).match(/^v\d+$/)
+    expect(javyPlugin.path).toMatch(/(\/|\\)shopify_functions_javy_v1.wasm$/)
   })
 
   test('downloadUrl returns the correct URL', () => {
@@ -145,7 +145,9 @@ describe('javy-plugin', () => {
     const url = javyPlugin.downloadUrl('', '')
 
     // Then
-    expect(url).toMatch(/https:\/\/github.com\/bytecodealliance\/javy\/releases\/download\/v\d\.\d\.\d\/plugin.wasm.gz/)
+    expect(url).toMatch(
+      /^https:\/\/cdn\.shopify\.com\/shopifycloud\/shopify-functions-javy-plugin\/shopify_functions_javy_v\d+\.wasm$/,
+    )
   })
 
   test('downloads javy-plugin', async () => {
diff --git a/packages/app/src/cli/services/function/binaries.ts b/packages/app/src/cli/services/function/binaries.ts
index d702c1f1a1c..092a8085747 100644
--- a/packages/app/src/cli/services/function/binaries.ts
+++ b/packages/app/src/cli/services/function/binaries.ts
@@ -4,16 +4,17 @@ import {outputDebug} from '@shopify/cli-kit/node/output'
 import {performActionWithRetryAfterRecovery} from '@shopify/cli-kit/common/retry'
 import {fetch} from '@shopify/cli-kit/node/http'
 import {PipelineSource} from 'stream'
+import {pipeline} from 'stream/promises'
 import stream from 'node:stream/promises'
 import fs from 'node:fs'
 import * as gzip from 'node:zlib'
 import {fileURLToPath} from 'node:url'
 
-const FUNCTION_RUNNER_VERSION = 'v6.4.0'
+const FUNCTION_RUNNER_VERSION = 'v6.5.0'
 const JAVY_VERSION = 'v4.0.0'
-// The Javy plugin version does not need to match the Javy version. It should
-// match the plugin version used in the function-runner version specified above.
-const JAVY_PLUGIN_VERSION = 'v3.2.0'
+// The Javy plugin version should match the plugin version used in the
+// function-runner version specified above.
+const JAVY_PLUGIN_VERSION = 'v1'
 
 interface DownloadableBinary {
   path: string
@@ -93,17 +94,22 @@ class JavyPlugin implements DownloadableBinary {
   readonly path: string
 
   constructor() {
-    this.name = 'javy_quickjs_provider_v3'
+    this.name = `shopify_functions_javy_${JAVY_PLUGIN_VERSION}`
     this.version = JAVY_PLUGIN_VERSION
-    this.path = joinPath(dirname(fileURLToPath(import.meta.url)), '..', 'bin', 'javy_quickjs_provider_v3.wasm')
+    this.path = joinPath(
+      dirname(fileURLToPath(import.meta.url)),
+      '..',
+      'bin',
+      `shopify_functions_javy_${JAVY_PLUGIN_VERSION}.wasm`,
+    )
   }
 
   downloadUrl(_processPlatform: string, _processArch: string) {
-    return `https://github.com/bytecodealliance/javy/releases/download/${this.version}/plugin.wasm.gz`
+    return `https://cdn.shopify.com/shopifycloud/shopify-functions-javy-plugin/shopify_functions_javy_${JAVY_PLUGIN_VERSION}.wasm`
   }
 
   async processResponse(responseStream: PipelineSource<unknown>, outputStream: fs.WriteStream): Promise<void> {
-    return gunzipResponse(responseStream, outputStream)
+    return pipeline(responseStream, outputStream)
   }
 }