diff --git a/packages/ko/CHANGELOG.md b/packages/ko/CHANGELOG.md
index 60cc4a82..53a6d8ca 100644
--- a/packages/ko/CHANGELOG.md
+++ b/packages/ko/CHANGELOG.md
@@ -1,5 +1,11 @@
 # ko
 
+## 6.5.9
+
+### Patch Changes
+
+- fa12b04b8: transform antlr4-c3 file &&=
+
 ## 6.5.8
 
 ### Patch Changes
diff --git a/packages/ko/package.json b/packages/ko/package.json
index 6592e350..1b5e1fdc 100644
--- a/packages/ko/package.json
+++ b/packages/ko/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ko",
-  "version": "6.5.8",
+  "version": "6.5.9",
   "description": "build & lint library",
   "keywords": [
     "ko",
diff --git a/packages/ko/src/webpack/loaders/script.ts b/packages/ko/src/webpack/loaders/script.ts
index 3e5c60e0..5385c6f5 100644
--- a/packages/ko/src/webpack/loaders/script.ts
+++ b/packages/ko/src/webpack/loaders/script.ts
@@ -28,6 +28,8 @@ class Script {
           // internal modules dt-common compatible
           if (input.includes('node_modules/dt-common/src/')) {
             return true;
+          } else if (input.includes('antlr4-c3')) {
+            return true;
           } else if (input.includes('node_modules')) {
             return false;
           } else {