diff --git a/pyproject.toml b/pyproject.toml
index d136319..bf698e5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ classifiers = [
     "License :: OSI Approved :: BSD License",
     "Natural Language :: English",
 ]
-dependencies = ["typing", "numpy"]
+dependencies = ["typing", "numpy", "pandas"]
 
 [project.optional-dependencies]
 test = ["pytest", "pytest-cov"]
diff --git a/src/distrx/transforms.py b/src/distrx/transforms.py
index 39b3fe2..1d69f83 100644
--- a/src/distrx/transforms.py
+++ b/src/distrx/transforms.py
@@ -15,7 +15,6 @@
 
 import numpy as np
 import numpy.typing as npt
-from mrtool import MRBRT, LinearCovModel, MRData
 
 
 class FirstOrder: