diff --git a/kaldifeat/python/csrc/feature-window.cc b/kaldifeat/python/csrc/feature-window.cc
index 81cc275..d7af62c 100644
--- a/kaldifeat/python/csrc/feature-window.cc
+++ b/kaldifeat/python/csrc/feature-window.cc
@@ -12,39 +12,38 @@
 namespace kaldifeat {
 
 static void PybindFrameExtractionOptions(py::module &m) {
-  py::class_<FrameExtractionOptions>(m, "FrameExtractionOptions")
+  using PyClass = FrameExtractionOptions;
+  py::class_<PyClass>(m, "FrameExtractionOptions")
       .def(py::init<>())
-      .def_readwrite("samp_freq", &FrameExtractionOptions::samp_freq)
-      .def_readwrite("frame_shift_ms", &FrameExtractionOptions::frame_shift_ms)
-      .def_readwrite("frame_length_ms",
-                     &FrameExtractionOptions::frame_length_ms)
-      .def_readwrite("dither", &FrameExtractionOptions::dither)
-      .def_readwrite("preemph_coeff", &FrameExtractionOptions::preemph_coeff)
-      .def_readwrite("remove_dc_offset",
-                     &FrameExtractionOptions::remove_dc_offset)
-      .def_readwrite("window_type", &FrameExtractionOptions::window_type)
-      .def_readwrite("round_to_power_of_two",
-                     &FrameExtractionOptions::round_to_power_of_two)
-      .def_readwrite("blackman_coeff", &FrameExtractionOptions::blackman_coeff)
-      .def_readwrite("snip_edges", &FrameExtractionOptions::snip_edges)
+      .def_readwrite("samp_freq", &PyClass::samp_freq)
+      .def_readwrite("frame_shift_ms", &PyClass::frame_shift_ms)
+      .def_readwrite("frame_length_ms", &PyClass::frame_length_ms)
+      .def_readwrite("dither", &PyClass::dither)
+      .def_readwrite("preemph_coeff", &PyClass::preemph_coeff)
+      .def_readwrite("remove_dc_offset", &PyClass::remove_dc_offset)
+      .def_readwrite("window_type", &PyClass::window_type)
+      .def_readwrite("round_to_power_of_two", &PyClass::round_to_power_of_two)
+      .def_readwrite("blackman_coeff", &PyClass::blackman_coeff)
+      .def_readwrite("snip_edges", &PyClass::snip_edges)
       .def("as_dict",
-           [](const FrameExtractionOptions &self) -> py::dict {
-             return AsDict(self);
-           })
+           [](const PyClass &self) -> py::dict { return AsDict(self); })
       .def_static("from_dict",
-                  [](py::dict dict) -> FrameExtractionOptions {
+                  [](py::dict dict) -> PyClass {
                     return FrameExtractionOptionsFromDict(dict);
                   })
 #if 0
       .def_readwrite("allow_downsample",
-                     &FrameExtractionOptions::allow_downsample)
-      .def_readwrite("allow_upsample", &FrameExtractionOptions::allow_upsample)
+                     &PyClass::allow_downsample)
+      .def_readwrite("allow_upsample", &PyClass::allow_upsample)
       .def_readwrite("max_feature_vectors",
-                     &FrameExtractionOptions::max_feature_vectors)
+                     &PyClass::max_feature_vectors)
 #endif
-      .def("__str__", [](const FrameExtractionOptions &self) -> std::string {
-        return self.ToString();
-      });
+      .def("__str__",
+           [](const PyClass &self) -> std::string { return self.ToString(); })
+      .def(py::pickle([](const PyClass &self) { return AsDict(self); },
+                      [](py::dict dict) -> PyClass {
+                        return FrameExtractionOptionsFromDict(dict);
+                      }));
 
   m.def("num_frames", &NumFrames, py::arg("num_samples"), py::arg("opts"),
         py::arg("flush") = true);
diff --git a/kaldifeat/python/csrc/utils.h b/kaldifeat/python/csrc/utils.h
index 472d7c9..9ecac6d 100644
--- a/kaldifeat/python/csrc/utils.h
+++ b/kaldifeat/python/csrc/utils.h
@@ -15,7 +15,7 @@
 
 /*
  * This file contains code about `from_dict` and
- * `to_dict` for various options in kaldifeat.
+ * `as_dict` for various options in kaldifeat.
  *
  * Regarding `from_dict`, users don't need to provide
  * all the fields in the options. If some fields
diff --git a/kaldifeat/python/tests/test_frame_extraction_options.py b/kaldifeat/python/tests/test_frame_extraction_options.py
index 4fa90d9..511d0a7 100755
--- a/kaldifeat/python/tests/test_frame_extraction_options.py
+++ b/kaldifeat/python/tests/test_frame_extraction_options.py
@@ -2,6 +2,8 @@
 #
 # Copyright (c)  2021  Xiaomi Corporation (authors: Fangjun Kuang)
 
+import pickle
+
 import kaldifeat
 
 
@@ -94,12 +96,23 @@ def test_from_dict_full_and_as_dict():
     assert opts3.window_type == "hanning"
 
 
+def test_pickle():
+    opts = kaldifeat.FrameExtractionOptions()
+    opts.samp_freq = 44100
+    opts.dither = 5.5
+    data = pickle.dumps(opts)
+
+    opts2 = pickle.loads(data)
+    assert str(opts) == str(opts2)
+
+
 def main():
     test_default()
     test_set_get()
     test_from_empty_dict()
     test_from_dict_partial()
     test_from_dict_full_and_as_dict()
+    test_pickle()
 
 
 if __name__ == "__main__":