diff --git a/swe/src/seleapsec.txt b/swe/src/seleapsec.txt
index dd362c0..fdd4675 100644
--- a/swe/src/seleapsec.txt
+++ b/swe/src/seleapsec.txt
@@ -2,4 +2,28 @@
 # by the Swiss Ephemeris. 
 # For each new leap second add the date of its insertion in the format
 # yyyymmdd, e.g. "20081231" for 21 december 2008
+19720630
+19721231
+19731231
+19741231
+19751231
+19761231
+19771231
+19781231
+19791231
+19810630
+19820630
+19830630
+19850630
+19871231
+19891231
+19901231
+19920630
+19930630
+19949630
+19951231
+19970630
+19981231
+20051231
 20081231
+20120630