diff --git a/av/audio/layout.py b/av/audio/layout.py
index 344efa220..f3adb3514 100644
--- a/av/audio/layout.py
+++ b/av/audio/layout.py
@@ -28,6 +28,9 @@ def get_audio_layout(c_layout: lib.AVChannelLayout) -> AudioLayout:
 @cython.final
 @cython.cclass
 class AudioLayout:
+    def __dealloc__(self):
+        lib.av_channel_layout_uninit(cython.address(self.layout))
+
     def __cinit__(self, layout):
         if layout is _cinit_bypass_sentinel:
             return
diff --git a/include/avcodec.pxd b/include/avcodec.pxd
index 21b5e8324..f2123ce0d 100644
--- a/include/avcodec.pxd
+++ b/include/avcodec.pxd
@@ -16,6 +16,7 @@ cdef extern from "libavutil/channel_layout.h" nogil:
     int av_channel_description(char *buf, size_t buf_size, AVChannel channel_id)
     int av_channel_layout_compare(AVChannelLayout *chl, AVChannelLayout *chl1)
     AVChannel av_channel_layout_channel_from_index(AVChannelLayout *channel_layout, unsigned int idx)
+    void av_channel_layout_uninit(AVChannelLayout *channel_layout)
 
 cdef extern from "libavcodec/avcodec.h" nogil:
     cdef int avcodec_version()