diff --git a/setup.py b/setup.py
index 5ba2afa..b8d6a91 100644
--- a/setup.py
+++ b/setup.py
@@ -191,7 +191,8 @@ def get_openblas():
     openblas_full_path_install = os.path.join(start_working_dir, openblas_dir_install)
     openblas_git = "https://github.com/xianyi/OpenBLAS.git"
 
-    openblas_target_optimization = ask_openblas_optimization_level()
+    # openblas_target_optimization = ask_openblas_optimization_level()
+    openblas_target_optimization = "-Ofast"
     if openblas_target_optimization != "SKIPOPENBLAS":
         clone_git_repository(openblas_full_path, openblas_git)
         if openblas_target_optimization != "":
@@ -245,7 +246,8 @@ class DependenciesBuilder(_build):
         clone_git_repository(polymath_full_path, polymath_git)
 
         ############## build spintrum
-        spintrum_optimization_target = ask_spintrum_optimization_level()
+        # spintrum_optimization_target = ask_spintrum_optimization_level()
+        spintrum_optimization_target = "-Ofast"
         print("Building Spintrum extension...")
         err_code = subprocess.call(["cmake . -DPythonInstallation=1 -DOptimizationLevel=" + spintrum_optimization_target], shell=True)
         deal_with_error_code(err_code, "CMaking spintrum")