diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d28d8b..3145aee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Change Log
 
+## 1.4.0
+
+- Sync standalone Custom Code Files: edits to files in `lib/custom_code/` now push to FlutterFlow (previously only custom functions, actions, and widgets synced).
+
 ## 1.3.0
 
 - Support the folder-organized custom code structure: custom functions, actions, and widgets are now synced wherever they live under `lib/` (not just `lib/custom_code/`), discovered from the generated barrel files.
diff --git a/package.json b/package.json
index 257f423..710393a 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "flutterflow-custom-code-editor",
   "displayName": "FlutterFlow: Custom Code Editor",
   "description": "Edit your FlutterFlow custom  widgets, action, and functions.",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "publisher": "FlutterFlow",
   "repository": {
 		"type": "git",
diff --git a/src/ffState/UpdateManager.ts b/src/ffState/UpdateManager.ts
index 1e28f33..9bfd9f2 100644
--- a/src/ffState/UpdateManager.ts
+++ b/src/ffState/UpdateManager.ts
@@ -319,10 +319,16 @@ export class UpdateManager {
       }
     }
 
-    // Create new FileInfo with default values
-    const impliedName = codeType === CodeType.WIDGET ?
-      toPascalCase(path.basename(filePath, '.dart')) :
-      toCamelCase(path.basename(filePath, '.dart'));
+    // Create new FileInfo with default values. A standalone code file's identifier is
+    // its basename (including .dart), matching the server's FFCustomCodeFile identifier.
+    let impliedName: string;
+    if (codeType === CodeType.CODE_FILE) {
+      impliedName = path.basename(filePath);
+    } else if (codeType === CodeType.WIDGET) {
+      impliedName = toPascalCase(path.basename(filePath, '.dart'));
+    } else {
+      impliedName = toCamelCase(path.basename(filePath, '.dart'));
+    }
 
     const fileInfo: FileInfo = {
       old_identifier_name: impliedName,
@@ -371,6 +377,7 @@ export class UpdateManager {
     const isCustomCodeFile =
       codeType === CodeType.ACTION ||
       codeType === CodeType.WIDGET ||
+      codeType === CodeType.CODE_FILE ||
       (codeType === CodeType.FUNCTION && this._folderOrganized);
     if (!isCustomCodeFile) {
       return false;
diff --git a/src/fileUtils/FileInfo.ts b/src/fileUtils/FileInfo.ts
index 21638b8..aa33d40 100644
--- a/src/fileUtils/FileInfo.ts
+++ b/src/fileUtils/FileInfo.ts
@@ -14,6 +14,8 @@ export enum CodeType {
     ACTION = 'A',
     WIDGET = 'W',
     FUNCTION = 'F',
+    // eslint-disable-next-line no-unused-vars
+    CODE_FILE = 'C',
     DEPENDENCIES = 'D',
     OTHER = 'O',
 }
@@ -30,6 +32,9 @@ export function getRelativePath(filePath: string, fileInfo: FileInfo): string {
     if (fileInfo.type === CodeType.FUNCTION) {
         return path.posix.join('lib', 'flutter_flow', filePath);
     }
+    if (fileInfo.type === CodeType.CODE_FILE) {
+        return path.posix.join('lib', 'custom_code', filePath);
+    }
     if (fileInfo.type === CodeType.DEPENDENCIES) {
         return filePath;
     }
diff --git a/src/fileUtils/customCodeManifest.ts b/src/fileUtils/customCodeManifest.ts
index e015379..800b4f9 100644
--- a/src/fileUtils/customCodeManifest.ts
+++ b/src/fileUtils/customCodeManifest.ts
@@ -172,6 +172,29 @@ function addBarrelEntries(
     }
 }
 
+// Standalone custom code files are generated flat under lib/custom_code/ (never in a
+// user-facing subfolder), so the directory is scanned non-recursively. Their identifier
+// name is the basename including the .dart extension, matching the server's
+// FFCustomCodeFile.identifier.name.
+function addCustomCodeFileEntries(manifest: CustomCodeManifest, projectRoot: string) {
+    const customCodeDir = fullPathFromKey(projectRoot, kCustomCodeDir);
+    let entries: fs.Dirent[];
+    try {
+        entries = fs.readdirSync(customCodeDir, { withFileTypes: true });
+    } catch {
+        return;
+    }
+    for (const entry of entries) {
+        if (!entry.isFile() || !entry.name.endsWith('.dart') || entry.name === 'index.dart') {
+            continue;
+        }
+        manifest.set(path.posix.join(kCustomCodeDir, entry.name), {
+            type: CodeType.CODE_FILE,
+            identifierName: entry.name,
+        });
+    }
+}
+
 // Builds a manifest of all custom code files by parsing the three barrel files.
 // In folder-organized mode each custom function gets its own entry; in legacy mode
 // the monolithic custom_functions.dart is the single function entry.
@@ -179,6 +202,7 @@ export function buildCustomCodeManifest(projectRoot: string): CustomCodeManifest
     const manifest: CustomCodeManifest = new Map();
     addBarrelEntries(manifest, projectRoot, kActionsBarrelPath, CodeType.ACTION);
     addBarrelEntries(manifest, projectRoot, kWidgetsBarrelPath, CodeType.WIDGET);
+    addCustomCodeFileEntries(manifest, projectRoot);
 
     const functionsPath = fullPathFromKey(projectRoot, kCustomFunctionsPath);
     if (!fs.existsSync(functionsPath)) {
@@ -236,9 +260,27 @@ export function classifyRelativePath(
     if (folderOrganized && relativePath.startsWith('lib/custom_code/functions/')) {
         return CodeType.FUNCTION;
     }
+    // A standalone custom code file lives directly under lib/custom_code/ (no further
+    // subdirectory). Deeper paths are handled by the actions/widgets/functions checks above.
+    if (isCustomCodeFilePath(relativePath)) {
+        return CodeType.CODE_FILE;
+    }
     return CodeType.OTHER;
 }
 
+const kCustomCodeDir = 'lib/custom_code/';
+
+// True iff the path is exactly lib/custom_code/<name>.dart (flat, not in a subfolder,
+// and not the index.dart barrel). Callers must already have ruled out the
+// actions/widgets/functions subdirectories.
+function isCustomCodeFilePath(relativePath: string): boolean {
+    if (!relativePath.startsWith(kCustomCodeDir) || !relativePath.endsWith('.dart')) {
+        return false;
+    }
+    const remainder = relativePath.slice(kCustomCodeDir.length);
+    return !remainder.includes('/') && remainder !== 'index.dart';
+}
+
 /**
  * Fixes up file maps written by older extension versions: entries migrated from
  * basename keys may point at the canonical folders while the file actually lives in a
diff --git a/src/test/jest/customCodeManifest.test.ts b/src/test/jest/customCodeManifest.test.ts
index 02378c1..6f9c545 100644
--- a/src/test/jest/customCodeManifest.test.ts
+++ b/src/test/jest/customCodeManifest.test.ts
@@ -151,8 +151,10 @@ describe('buildCustomCodeManifest', () => {
         assert.deepEqual(manifest.get('lib/events/festival/festival_date.dart'), { type: CodeType.FUNCTION, identifierName: 'festivalDate' });
         // Falls back to the camelCase basename when no declaration can be parsed
         assert.deepEqual(manifest.get('lib/custom_code/functions/odd_one.dart'), { type: CodeType.FUNCTION, identifierName: 'oddOne' });
+        // Standalone custom code files are tracked by their basename (including .dart)
+        assert.deepEqual(manifest.get('lib/custom_code/my_helper.dart'), { type: CodeType.CODE_FILE, identifierName: 'my_helper.dart' });
         assert.equal(manifest.has('lib/flutter_flow/custom_functions.dart'), false);
-        assert.equal(manifest.size, 6);
+        assert.equal(manifest.size, 7);
     });
 
     it('builds a manifest for a legacy project', () => {
@@ -160,7 +162,8 @@ describe('buildCustomCodeManifest', () => {
         assert.deepEqual(manifest.get('lib/custom_code/actions/my_action.dart'), { type: CodeType.ACTION, identifierName: 'myAction' });
         assert.deepEqual(manifest.get('lib/custom_code/widgets/my_widget.dart'), { type: CodeType.WIDGET, identifierName: 'MyWidget' });
         assert.deepEqual(manifest.get('lib/flutter_flow/custom_functions.dart'), { type: CodeType.FUNCTION, identifierName: 'CustomFunctions' });
-        assert.equal(manifest.size, 3);
+        assert.deepEqual(manifest.get('lib/custom_code/my_helper.dart'), { type: CodeType.CODE_FILE, identifierName: 'my_helper.dart' });
+        assert.equal(manifest.size, 4);
     });
 
     it('rejects export targets that escape lib/', () => {
@@ -213,11 +216,25 @@ describe('classifyRelativePath', () => {
         // 'transactions' contains 'actions'; the file is still a function
         assert.equal(classifyRelativePath('lib/custom_code/functions/get_transactions.dart', manifest, true), CodeType.FUNCTION);
         assert.equal(classifyRelativePath('lib/custom_code/functions/my_widgets_list.dart', manifest, true), CodeType.FUNCTION);
-        // Files directly under lib/custom_code/ are not in a canonical folder
-        assert.equal(classifyRelativePath('lib/custom_code/actions_helper.dart', manifest, true), CodeType.OTHER);
+        // Files directly under lib/custom_code/ are standalone custom code files
+        assert.equal(classifyRelativePath('lib/custom_code/actions_helper.dart', manifest, true), CodeType.CODE_FILE);
+        // A file nested in an arbitrary subfolder of lib/custom_code/ is not classifiable
         assert.equal(classifyRelativePath('lib/custom_code/extractions/foo.dart', manifest, true), CodeType.OTHER);
     });
 
+    it('classifies standalone custom code files but not the canonical subfolders', () => {
+        const manifest = buildCustomCodeManifest(folderOrganizedRoot);
+        assert.equal(classifyRelativePath('lib/custom_code/my_helper.dart', manifest, true), CodeType.CODE_FILE);
+        assert.equal(classifyRelativePath('lib/custom_code/brand_new.dart', manifest, false), CodeType.CODE_FILE);
+        // Regression guard: files in the actions/widgets/functions subfolders keep their
+        // existing classification and must not be captured as standalone code files
+        assert.equal(classifyRelativePath('lib/custom_code/actions/do_this.dart', manifest, true), CodeType.ACTION);
+        assert.equal(classifyRelativePath('lib/custom_code/widgets/brand_new.dart', manifest, true), CodeType.WIDGET);
+        assert.equal(classifyRelativePath('lib/custom_code/functions/brand_new.dart', manifest, true), CodeType.FUNCTION);
+        // The barrel index file itself is never a standalone code file
+        assert.equal(classifyRelativePath('lib/custom_code/index.dart', manifest, true), CodeType.OTHER);
+    });
+
     it('cannot safely classify new files in arbitrary user folders', () => {
         const manifest = buildCustomCodeManifest(folderOrganizedRoot);
         assert.equal(classifyRelativePath('lib/events/festival/brand_new.dart', manifest, true), CodeType.OTHER);
diff --git a/src/test/unit/UpdateManager.test.ts b/src/test/unit/UpdateManager.test.ts
index 7cbf0d9..7859373 100644
--- a/src/test/unit/UpdateManager.test.ts
+++ b/src/test/unit/UpdateManager.test.ts
@@ -424,6 +424,27 @@ describe('UpdateManager (folder-organized)', () => {
         assert.notStrictEqual(result.current_checksum, originalChecksum);
         assert.strictEqual(updateManager.shouldTrackFile(filePath, 'update'), true);
     });
+
+    it('should track edits to a standalone custom code file', async () => {
+        const filePath = path.join(tempDir, 'lib/custom_code/my_helper.dart');
+        assert.strictEqual(updateManager.shouldTrackFile(filePath, 'update'), true);
+        const originalChecksum = computeChecksum(filePath);
+        await fs.promises.writeFile(filePath, fs.readFileSync(filePath, 'utf8') + '\n// edited');
+        const result = await updateManager.updateFile(filePath);
+        assert.ok(result);
+        assert.strictEqual(result.type, 'C');
+        assert.strictEqual(result.old_identifier_name, 'my_helper.dart');
+        assert.strictEqual(result.new_identifier_name, 'my_helper.dart');
+        assert.strictEqual(result.original_checksum, originalChecksum);
+        assert.notStrictEqual(result.current_checksum, originalChecksum);
+    });
+
+    it('should block a tracked custom code file rename', async () => {
+        const oldPath = path.join(tempDir, 'lib/custom_code/my_helper.dart');
+        const newPath = path.join(tempDir, 'lib/custom_code/my_helper_renamed.dart');
+        assert.strictEqual(updateManager.blockRename(oldPath, newPath), true);
+        assert.ok(updateManager.fileMap.has('lib/custom_code/my_helper.dart'));
+    });
 });
 
 // Other test cases (deleteFile, updateFile, etc.) would be converted similarly
\ No newline at end of file
diff --git a/src/test/util/mockFiles.ts b/src/test/util/mockFiles.ts
index 8b4d4e4..54a408e 100644
--- a/src/test/util/mockFiles.ts
+++ b/src/test/util/mockFiles.ts
@@ -98,6 +98,11 @@ Future<DocumentReference?> createTestRun(
 `],
   ['lib/custom_code/actions/index.dart', `
         export 'my_action.dart' show myAction;
+`],
+  ['lib/custom_code/my_helper.dart',
+    `class Helper {
+  String greet() => 'hi';
+}
 `],
   ['pubspec.yaml', `
         name: flutter_flow_custom_code_editor
@@ -162,6 +167,11 @@ Future planFestival() async {
 }
 `],
   ['lib/custom_code/widgets/index.dart', '// No exports\n'],
+  ['lib/custom_code/my_helper.dart',
+    `class Helper {
+  String greet() => 'hi';
+}
+`],
   ['pubspec.yaml', `
         name: flutter_flow_custom_code_editor
         description: A FlutterFlow custom code editor
diff --git a/testdata/folder_organized_project/lib/custom_code/my_helper.dart b/testdata/folder_organized_project/lib/custom_code/my_helper.dart
new file mode 100644
index 0000000..656f2b5
--- /dev/null
+++ b/testdata/folder_organized_project/lib/custom_code/my_helper.dart
@@ -0,0 +1,3 @@
+class Helper {
+  String greet() => 'hi';
+}
diff --git a/testdata/legacy_project/lib/custom_code/my_helper.dart b/testdata/legacy_project/lib/custom_code/my_helper.dart
new file mode 100644
index 0000000..656f2b5
--- /dev/null
+++ b/testdata/legacy_project/lib/custom_code/my_helper.dart
@@ -0,0 +1,3 @@
+class Helper {
+  String greet() => 'hi';
+}