diff --git a/packages/app/src/cli/services/function/build.test.ts b/packages/app/src/cli/services/function/build.test.ts
index 4882550ed38..fa2092eb149 100644
--- a/packages/app/src/cli/services/function/build.test.ts
+++ b/packages/app/src/cli/services/function/build.test.ts
@@ -36,7 +36,7 @@ describe('buildGraphqlTypes', () => {
 
     // Then
     await expect(got).resolves.toBeUndefined()
-    expect(exec).toHaveBeenCalledWith('npm', ['exec', '--', 'graphql-code-generator'], {
+    expect(exec).toHaveBeenCalledWith('npm', ['exec', '--', 'graphql-code-generator', '--config', 'package.json'], {
       cwd: ourFunction.directory,
       stderr,
       signal,
diff --git a/packages/app/src/cli/services/function/build.ts b/packages/app/src/cli/services/function/build.ts
index 815f01bd1e1..5582fd8c6d2 100644
--- a/packages/app/src/cli/services/function/build.ts
+++ b/packages/app/src/cli/services/function/build.ts
@@ -65,7 +65,7 @@ export async function buildGraphqlTypes(
     throw new Error('GraphQL types can only be built for JavaScript functions')
   }
 
-  return exec('npm', ['exec', '--', 'graphql-code-generator'], {
+  return exec('npm', ['exec', '--', 'graphql-code-generator', '--config', 'package.json'], {
     cwd: fun.directory,
     stderr: options.stderr,
     signal: options.signal,