diff --git a/.changeset/sixty-crews-enjoy.md b/.changeset/sixty-crews-enjoy.md
new file mode 100644
index 0000000000..97681f5861
--- /dev/null
+++ b/.changeset/sixty-crews-enjoy.md
@@ -0,0 +1,5 @@
+---
+'@shopify/app': patch
+---
+
+Fix concurrent function builds
diff --git a/packages/app/src/cli/services/deploy/bundle.ts b/packages/app/src/cli/services/deploy/bundle.ts
index 97021cc2ee..79ba2f1ad8 100644
--- a/packages/app/src/cli/services/deploy/bundle.ts
+++ b/packages/app/src/cli/services/deploy/bundle.ts
@@ -5,6 +5,7 @@ import {renderConcurrent} from '@shopify/cli-kit/node/ui'
 import {AbortSignal} from '@shopify/cli-kit/node/abort'
 import {inTemporaryDirectory, mkdirSync, touchFile} from '@shopify/cli-kit/node/fs'
 import {joinPath} from '@shopify/cli-kit/node/path'
+import {exec} from '@shopify/cli-kit/node/system'
 import {Writable} from 'stream'
 
 export interface BundleOptions {
@@ -19,6 +20,13 @@ export async function bundleAndBuildExtensions(options: BundleOptions) {
     await mkdirSync(bundleDirectory)
     await touchFile(joinPath(bundleDirectory, '.shopify'))
 
+    const javyRequired = options.app.allExtensions.some((ext) => ext.features.includes('function'))
+    if (javyRequired) {
+      // Force the download of the javy binary in advance to avoid later problems,
+      // as it might be done multiple times in parallel. https://github.com/Shopify/cli/issues/2877
+      await exec('npm', ['exec', '--', 'javy', '--version'], {cwd: options.app.directory})
+    }
+
     await renderConcurrent({
       processes: options.app.allExtensions.map((extension) => {
         return {