diff --git a/AI4C.spec b/AI4C.spec
index 91851250476d7c719ac080eab27f33748aa01d77..5afa7b721e812b83ec69784b8ec0afbd88d75e63 100644
--- a/AI4C.spec
+++ b/AI4C.spec
@@ -35,7 +35,7 @@ cd %{_builddir}/%{name}-v%{version}-alpha/third_party/cmake-3.28.5
 mkdir build
 cd build
 cmake .. -DCMAKE_INSTALL_PREFIX=./install
-make install  
+make install -j 4 
 
 # Broken test in aarch64
 cd %{_builddir}/%{name}-v%{version}-alpha/third_party/onnxruntime-1.16.3
@@ -58,7 +58,7 @@ rm -v onnxruntime/test/optimizer/nhwc_transformer_test.cc
     -Donnxruntime_ENABLE_PYTHON=ON \
     -DCMAKE_BUILD_TYPE=RelWithDebInfo \
     -S cmake
-make
+make -j 4
 
 mkdir -p %{_builddir}/%{name}-v%{version}-alpha/aiframe/lib64/
 cd %{_builddir}/%{name}-v%{version}-alpha/third_party/onnxruntime-1.16.3
@@ -81,7 +81,7 @@ cp  orttraining/orttraining/training_api/include/onnxruntime_training_c_api.h %{
 ## construct ONNXRunner.so
 cd %{_builddir}/%{name}-v%{version}-alpha/aiframe
 cmake .
-make 
+make -j 4 
 mv ./libONNXRunner.so ./lib64 
 
 %install