diff --git a/packages/cli/src/lib/diff/handlers.ts b/packages/cli/src/lib/diff/handlers.ts
index 40e3d4c587..a210986b2a 100644
--- a/packages/cli/src/lib/diff/handlers.ts
+++ b/packages/cli/src/lib/diff/handlers.ts
@@ -61,7 +61,7 @@ class PackageJsonHandler {
       await this.syncField('main:src');
     }
     await this.syncField('types');
-    await this.syncField('files');
+    await this.syncFiles();
     await this.syncScripts();
     await this.syncPublishConfig();
     await this.syncDependencies('dependencies');
@@ -105,6 +105,15 @@ class PackageJsonHandler {
     }
   }
 
+  private async syncFiles() {
+    if (typeof this.targetPkg.configSchema === 'string') {
+      const files = [...this.pkg.files, this.targetPkg.configSchema];
+      await this.syncField('files', { files });
+    } else {
+      await this.syncField('files');
+    }
+  }
+
   private async syncScripts() {
     const pkgScripts = this.pkg.scripts;
     const targetScripts = (this.targetPkg.scripts =