--- sklearn/_build_utils/__init__.py.orig	2020-03-04 17:30:12.000000000 +0300
+++ sklearn/_build_utils/__init__.py	2020-03-04 17:30:25.000000000 +0300
@@ -77,7 +77,7 @@
         nthreads=n_jobs,
         compile_time_env={
             'SKLEARN_OPENMP_PARALLELISM_ENABLED': sklearn._OPENMP_SUPPORTED},
-        compiler_directives={'language_level': 3})
+        compiler_directives={'language_level': 3}, force=True)
 
 
 def gen_from_templates(templates, top_path):