diff --git a/CHANGELOG.md b/CHANGELOG.md
index 74ba117..50422a6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@
  * @LastEditTime: 2020-12-02 11:36:40
 -->
 
+## 0.2.6
+
+* fix stack overflow in jsToCString.
+
 ## 0.2.5
 
 * remove dart object when jsfree.
diff --git a/cxx/ffi.cpp b/cxx/ffi.cpp
index 227a61b..6ed755c 100644
--- a/cxx/ffi.cpp
+++ b/cxx/ffi.cpp
@@ -251,7 +251,11 @@ extern "C"
 
   DLLEXPORT const char *jsToCString(JSContext *ctx, JSValueConst *val)
   {
-    return JS_ToCString(ctx, *val);
+    JSRuntime *rt = JS_GetRuntime(ctx);
+    uint8_t *stack_top = JS_SetStackTop(rt, 0);
+    const char *ret = JS_ToCString(ctx, *val);
+    JS_SetStackTop(rt, stack_top);
+    return ret;
   }
 
   DLLEXPORT void jsFreeCString(JSContext *ctx, const char *ptr)
diff --git a/example/pubspec.lock b/example/pubspec.lock
index d9ad585..d994e83 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -82,7 +82,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.2.5"
+    version: "0.2.6"
   flutter_test:
     dependency: "direct dev"
     description: flutter
diff --git a/pubspec.yaml b/pubspec.yaml
index 2f9390f..ea53c28 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: flutter_qjs
 description: This plugin is a simple js engine for flutter using the `quickjs` project. Plugin currently supports all the platforms except web!
-version: 0.2.5
+version: 0.2.6
 homepage: https://github.com/ekibun/flutter_qjs
 
 environment: