diff --git a/setupinfo.py b/setupinfo.py
index 5feb13bf..ea1b391c 100644
--- a/setupinfo.py
+++ b/setupinfo.py
@@ -148,6 +148,7 @@ def ext_modules(static_include_dirs, static_library_dirs,
 
     cythonize_directives = {
         'binding': True,
+        'legacy_implicit_noexcept': True,
     }
     if OPTION_WITH_COVERAGE:
         cythonize_directives['linetrace'] = True