diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index 4b5a330..0000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1,2 +0,0 @@
-include regina/package-data/*
-include regina/sql/*.sql
diff --git a/m_teng/m_teng_interactive.py b/m_teng/m_teng_interactive.py
index ec58305..d0447a7 100644
--- a/m_teng/m_teng_interactive.py
+++ b/m_teng/m_teng_interactive.py
@@ -66,8 +66,6 @@ from m_teng.utility.data import load_dataframe
 from m_teng.utility import file_io
 from m_teng.update_funcs import _Monitor, _ModelPredict, _update_print
 
-from m_teng.backends import keithley as _keithley
-
 config_path = path.expanduser("~/.config/m-teng.json")
 
 _runtime_vars = {
diff --git a/pyproject.toml b/pyproject.toml
index a9fea36..7c422f3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ classifiers = [
 dependencies = [
     "matplotlib>=3.6",
     "numpy",
+    "pandas",
 ]
 
 [project.optional-dependencies]