diff --git a/models/generate-coreml-model.sh b/models/generate-coreml-model.sh
index 1cb20f06..aaf00fcf 100755
--- a/models/generate-coreml-model.sh
+++ b/models/generate-coreml-model.sh
@@ -25,7 +25,10 @@ if [ "$mname" = "-h5" ]; then
   echo "$mpath"
   python3 models/convert-h5-to-coreml.py --model-name "$mname" --model-path "$mpath" --encoder-only True
 else
-  python3 models/convert-whisper-to-coreml.py --model "$mname" --encoder-only True --optimize-ane True
+  # Note: --optimize-ane is disabled as it produces models that crash during inference.
+  # The ANE optimization code needs maintenance to work with newer model architectures
+  # and coremltools versions. See convert-whisper-to-coreml.py for details.
+  python3 models/convert-whisper-to-coreml.py --model "$mname" --encoder-only True
 fi
 
 xcrun coremlc compile models/coreml-encoder-"${mname}".mlpackage models/