diff --git a/esorex.spec b/esorex.spec
index c763628..436697f 100644
--- a/esorex.spec
+++ b/esorex.spec
@@ -1,6 +1,6 @@
 Name: esorex
 Version: 3.12.3
-Release: 5%{?dist}
+Release: 6%{?dist}
 Summary: Recipe Execution Tool of the European Southern Observatory 
 
 Group: Applications/Engineering
@@ -39,6 +39,9 @@ make DESTDIR=%{buildroot} install
 %{_bindir}/*
 
 %changelog
+* Fri Feb 23 2018 Christian Dersch <lupinix@mailbox.org> - 3.12.3-6
+- rebuilt for cfitsio 3.420 (so version bump)
+
 * Wed Feb 07 2018 Fedora Release Engineering <releng@fedoraproject.org> - 3.12.3-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild