diff --git a/setup.py b/setup.py
index bd9dcb4..2f64a54 100644
--- a/setup.py
+++ b/setup.py
@@ -66,7 +66,7 @@
     # project is installed. For an analysis of "install_requires" vs pip's
     # requirements files see:
     # https://packaging.python.org/en/latest/technical.html#install-requires-vs-requirements-files
-    install_requires=['pyusb'],
+    install_requires=['pyusb', 'pyserial'],
 
     # List additional groups of dependencies here (e.g. development dependencies).
     # You can install these using the following syntax, for example: