diff --git a/requirements.txt b/requirements.txt
index e071197e..65001ca4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 numpy
 pillow
+tkinter
 h5py
 gym
 -e git+https://github.com/tawnkramer/gym-donkeycar.git#egg=gym_donkeycar