diff --git a/setup.py b/setup.py
index d128c89..46994b8 100755
--- a/setup.py
+++ b/setup.py
@@ -16,6 +16,7 @@ if py_version == (2, 6):
     INSTALL_REQUIRES.append('argparse')
 
 duktape = Extension('dukpy._dukpy',
+                    libraries=['m'],
                     define_macros=[('DUK_OPT_DEEP_C_STACK', '1'),
                                    ('DUK_OPT_NONSTD_REGEXP_DOLLAR_ESCAPE', '1'),
                                    ('DUK_OPT_OCTAL_SUPPORT', '1')],