diff --git a/setup.py b/setup.py
index 4de26c32626e278b3c215691ec898b8efddd94e1..9288cbb06d2d110530f36874dba6efe5da47eb0e 100644
--- a/setup.py
+++ b/setup.py
@@ -21,8 +21,8 @@ ext_modules = [
     Extension(
         'cal_tools.lpdalgs',
         ['src/cal_tools/lpdalgs.pyx'],
-        include_dirs=[numpy.get_include()],
-        extra_compile_args=['-O3', '-fopenmp', '-march=native'],
+        extra_compile_args=['-O3', '-fopenmp', '-march=native',
+                            '-ftree-vectorize', '-frename-registers'],
         extra_link_args=['-fopenmp'],
     )
 ]