diff --git a/cal_tools/cal_tools/agipdlib.py b/cal_tools/cal_tools/agipdlib.py
index 073c106be034cd064c4cf8d2216492ddacdcb7a2..0049762e2474511e75b508d3640510c4cb7b7bb9 100644
--- a/cal_tools/cal_tools/agipdlib.py
+++ b/cal_tools/cal_tools/agipdlib.py
@@ -17,6 +17,9 @@ from cal_tools.agipdutils import (
 )
 from cal_tools.enums import BadPixels, SnowResolution
 from cal_tools.tools import get_constant_from_db_and_time
+from iCalibrationDB import Conditions, Constants
+
+from cal_tools.cython import agipdalgs as calgs
 
 
 def get_num_cells(fname, loc, module):