diff --git a/DESCRIPTION b/DESCRIPTION
index 0aa81b0..46df5ec 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -48,6 +48,7 @@ Collate:
     'Model.R'
     'GgmModel.R'
     'Interpolation.R'
+    'IsingModel.R'
     'Spline.R'
     'StepThree.R'
     'StepTwo.R'