diff --git a/paddlespeech/s2t/exps/u2/bin/quant.py b/paddlespeech/s2t/exps/u2/bin/quant.py
old mode 100644
new mode 100755
index 71101e1c4..f686d003d
--- a/paddlespeech/s2t/exps/u2/bin/quant.py
+++ b/paddlespeech/s2t/exps/u2/bin/quant.py
@@ -159,12 +159,12 @@ class U2Infer():
 
         # jit save
         logger.info(f"export save: {self.args.export_path}")
-        self.ptq.save_quantized_model(
-            self.model, 
-            self.args.export_path, 
-            postprocess=False, 
-            combine_params=True, 
-            skip_forward=True)
+        self.ptq.ptq._convert(self.model)
+        paddle.jit.save(
+                self.model,
+                self.args.export_path,
+                combine_params=True,
+                skip_forward=True)
 
 
 def main(config, args):
diff --git a/setup.py b/setup.py
index c1757b194..35668bddb 100644
--- a/setup.py
+++ b/setup.py
@@ -75,7 +75,7 @@ base = [
     "braceexpand",
     "pyyaml",
     "pybind11",
-    "paddleslim==2.4.0",
+    "paddleslim==2.3.4",
 ]
 
 server = ["fastapi", "uvicorn", "pattern_singleton", "websockets"]