diff --git a/requirements.txt b/requirements.txt
index ca541a39b3e93a1e64afa5ce9ea153efd44c78d7..ef346b9a56d2cd826d25a3e497e63253ccff46e6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,5 +3,6 @@ imageio
 numpy
 opencv-python-headless
 pybind11
+pyquaternion
 scipy
 tqdm