diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am
index 40f08b8e8..77830c98a 100644
--- a/src/plugins/Makefile.am
+++ b/src/plugins/Makefile.am
@@ -11,6 +11,7 @@ pkgdata_PYTHON = \
 	AncestorChart.py\
 	AncestorReport.py\
 	BookReport.py\
+	CalculateEstimatedDates.py\
 	Calendar.py \
 	ChangeTypes.py\
 	ChangeNames.py\