diff --git a/library/setup.py b/library/setup.py
index f40026b..996822e 100755
--- a/library/setup.py
+++ b/library/setup.py
@@ -50,5 +50,5 @@ setup(
     classifiers=classifiers,
     packages=['bme680'],
     py_modules=[],
-    install_requires=[]
+    install_requires=['smbus']  # preferably: install `python3-smbus` instead of relying on this
 )