diff --git a/RELEASE.txt b/RELEASE.txt
index 709e20431..6c604c6f5 100644
--- a/RELEASE.txt
+++ b/RELEASE.txt
@@ -1,4 +1,4 @@
-SLS Detector Package 4.0.0 released on 28.09.2018
+SLS Detector Package 4.0.0 released on 27.09.2018
 =================================================