diff --git a/analyze.py b/analyze.py
index 78998ed..e05056a 100644
--- a/analyze.py
+++ b/analyze.py
@@ -2,7 +2,7 @@ import matplotlib.pyplot as plt
 from rebound import SimulationArchive, Particle, Simulation
 
 from extradata import ExtraData
-from utils import filename_from_argv, plot_settings
+from utils import filename_from_argv, plot_settings, is_ci
 
 plot_settings()