diff --git a/.changeset/lovely-cougars-listen.md b/.changeset/lovely-cougars-listen.md
new file mode 100644
index 00000000000..a144d7914bd
--- /dev/null
+++ b/.changeset/lovely-cougars-listen.md
@@ -0,0 +1,5 @@
+---
+"app-builder-lib": patch
+---
+
+chore: remove stale handler for `extend-info` in electronMac plist creation
diff --git a/packages/app-builder-lib/src/electron/electronMac.ts b/packages/app-builder-lib/src/electron/electronMac.ts
index 544af0024ae..f4e675029cb 100644
--- a/packages/app-builder-lib/src/electron/electronMac.ts
+++ b/packages/app-builder-lib/src/electron/electronMac.ts
@@ -102,11 +102,6 @@ export async function createMacApp(packager: MacPackager, appOutDir: string, asa
   const helperGPUPlist = plistContent[6]
   const helperLoginPlist = plistContent[7]
 
-  // if an extend-info file was supplied, copy its contents in first
-  if (plistContent[8] != null) {
-    Object.assign(appPlist, plistContent[8])
-  }
-
   const buildMetadata = packager.config
 
   /**