diff -uNr trace-cruncher-0.2.0.dist/setup.py trace-cruncher-0.2.0/setup.py
--- trace-cruncher-0.2.0.dist/setup.py	2022-03-07 01:32:14.000000000 -0800
+++ trace-cruncher-0.2.0/setup.py	2022-04-06 17:13:18.663116620 -0700
@@ -74,7 +74,7 @@
                           sources=['src/ftracepy.c', 'src/ftracepy-utils.c'],
                           libraries=['traceevent', 'tracefs'])
 
-    cythonize('src/npdatawrapper.pyx', language_level = '3')
+    cythonize('src/npdatawrapper.pyx', language_level = 3)
     module_data = extension(name='tracecruncher.npdatawrapper',
                             sources=['src/npdatawrapper.c'],
                             libraries=['kshark'])