diff --git a/package.json b/package.json
index 0ebaf892..191591a4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "stated-js",
-  "version": "0.1.49",
+  "version": "0.1.50",
   "license": "Apache-2.0",
   "description": "JSONata embedded in JSON",
   "main": "./dist/src/index.js",
diff --git a/src/test/TemplateProcessor.test.js b/src/test/TemplateProcessor.test.js
index 961507ee..b21603a9 100644
--- a/src/test/TemplateProcessor.test.js
+++ b/src/test/TemplateProcessor.test.js
@@ -5694,6 +5694,23 @@ test("test import with props", async () => {
     }
 });
 
+test("test async function stringifyy", async () => {
+    const foo = async function(){
+        return 'bar';
+    };
+
+    const o = {
+        a:42,
+        b: foo
+    };
+    expect(JSON.parse(stringifyTemplateJSON(o))).toStrictEqual({
+        a:42,
+        b: "{function:}"
+    })
+});
+
+
+
 
 
 
diff --git a/src/utils/stringify.ts b/src/utils/stringify.ts
index 1f2979dd..6577b8ee 100644
--- a/src/utils/stringify.ts
+++ b/src/utils/stringify.ts
@@ -36,7 +36,7 @@ export const circularReplacer = (key: any, value: any) => {
     if (tag === '[object Timeout]'|| (_idleTimeout !== undefined && _onTimeout !== undefined)) { //Node.js
       return "--interval/timeout--";
     }
-    if (tag === '[object Function]') {
+    if (tag === '[object Function]' || tag==='[object AsyncFunction]') {
       return "{function:}";
     }
     // Check if value is a module-like object