diff --git a/src/huggingface_inference_toolkit/serialization/base.py b/src/huggingface_inference_toolkit/serialization/base.py
index 38a4a5d8..d55c5b99 100644
--- a/src/huggingface_inference_toolkit/serialization/base.py
+++ b/src/huggingface_inference_toolkit/serialization/base.py
@@ -20,6 +20,7 @@
     "audio/x-flac": Audioer,
     "audio/flac": Audioer,
     "audio/mpeg": Audioer,
+    "audio/x-mpeg-3": Audioer,
     "audio/wave": Audioer,
     "audio/wav": Audioer,
     "audio/x-wav": Audioer,
@@ -27,6 +28,12 @@
     "audio/x-audio": Audioer,
     "audio/webm": Audioer,
     "audio/webm;codecs=opus": Audioer,
+    "audio/AMR": Audioer,
+    "audio/amr": Audioer,
+    "audio/AMR-WB": Audioer,
+    "audio/AMR-WB+": Audioer,
+    "audio/m4a": Audioer,
+    "audio/x-m4a": Audioer,
 }
 
 
diff --git a/tests/resources/audio/sample.amr b/tests/resources/audio/sample.amr
new file mode 100644
index 00000000..3bced4d3
Binary files /dev/null and b/tests/resources/audio/sample.amr differ
diff --git a/tests/resources/audio/sample.m4a b/tests/resources/audio/sample.m4a
new file mode 100644
index 00000000..d633abea
Binary files /dev/null and b/tests/resources/audio/sample.m4a differ