diff --git a/CMakeLists.txt b/CMakeLists.txt
index f8da231d84f28..b8aec9fd3852a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -50,12 +50,12 @@ option(TORCH_MLIR_OUT_OF_TREE_BUILD "Specifies an out of tree build" OFF)
 # native extensions will be built.
 # TORCH_MLIR_ENABLE_PYTORCH_EXTENSIONS will be disabled by default shortly,
 # once some reorganizations of the testing codebase makes that possible.
-option(TORCH_MLIR_ENABLE_PYTORCH_EXTENSIONS "Enables PyTorch native extension features" ON)
+option(TORCH_MLIR_ENABLE_PYTORCH_EXTENSIONS "Enables PyTorch native extension features" OFF)
 # NOTE: The JIT_IR_IMPORTER paths have become unsupportable due to age and lack of maintainers.
 # Turning this off disables the old TorchScript path, leaving FX based import as the current supported option.
 # The option will be retained for a time, and if a maintainer is interested in setting up testing for it,
 # please reach out on the list and speak up for it. It will only be enabled in CI for test usage.
-cmake_dependent_option(TORCH_MLIR_ENABLE_JIT_IR_IMPORTER "Enables JIT IR Importer" OFF TORCH_MLIR_ENABLE_PYTORCH_EXTENSIONS OFF)
+cmake_dependent_option(TORCH_MLIR_ENABLE_JIT_IR_IMPORTER "Enables JIT IR Importer" ON TORCH_MLIR_ENABLE_PYTORCH_EXTENSIONS OFF)
 cmake_dependent_option(TORCH_MLIR_ENABLE_LTC "Enables LTC backend" OFF TORCH_MLIR_ENABLE_PYTORCH_EXTENSIONS OFF)
 
 option(TORCH_MLIR_ENABLE_ONNX_C_IMPORTER "Enables the ONNX C importer" OFF)
diff --git a/build_tools/ci/build_posix.sh b/build_tools/ci/build_posix.sh
index 32af9363279c3..ea3e570c8b7e1 100755
--- a/build_tools/ci/build_posix.sh
+++ b/build_tools/ci/build_posix.sh
@@ -51,7 +51,7 @@ cmake -S "$repo_root/externals/llvm-project/llvm" -B "$build_dir" \
   -DLLVM_TARGETS_TO_BUILD=host \
   -DMLIR_ENABLE_BINDINGS_PYTHON=ON \
   -DTORCH_MLIR_ENABLE_LTC=ON \
-  -DTORCH_MLIR_ENABLE_JIT_IR_IMPORTER=ON
+  -DTORCH_MLIR_ENABLE_PYTORCH_EXTENSIONS=ON
 echo "::endgroup::"
 
 echo "::group::Build"