diff --git a/can/SConscript b/can/SConscript
index 36bea21..c8d4f34 100644
--- a/can/SConscript
+++ b/can/SConscript
@@ -18,5 +18,5 @@ libdbc = env.SharedLibrary('libdbc', ["dbc.cc", "parser.cc", "packer.cc", "commo
 
 # Build packer and parser
 env.Command(['packer_pyx.so', 'packer_pyx.cpp', 'parser_pyx.so', 'parser_pyx.cpp'],
-            cython_dependencies + [libdbc, cereal, 'common_pyx_setup.py', 'common.pxd', 'packer_pyx.pyx', 'parser_pyx.pyx'],
+            cython_dependencies + [libdbc, cereal, 'common_pyx_setup.py', 'common.pxd', 'packer_pyx.pyx', 'parser_pyx.pyx', 'packer.cc', 'parser.cc'],
             "cd opendbc/can && python3 common_pyx_setup.py build_ext --inplace")