diff --git a/.gitignore b/.gitignore
index ac0acdd..abf5fac 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 /bibutils_5.0_src.tgz
 /bibutils_5.5_src.tgz
 /bibutils_6.2_src.tgz
+/bibutils_6.3_src.tgz
diff --git a/bibutils.spec b/bibutils.spec
index cf28666..9137fe7 100644
--- a/bibutils.spec
+++ b/bibutils.spec
@@ -1,6 +1,6 @@
 Name:           bibutils
-Version:        6.2
-Release:        4%{?dist}
+Version:        6.3
+Release:        1%{?dist}
 Summary:        Bibliography conversion tools
 License:        GPLv2
 URL:            http://sourceforge.net/p/bibutils/home/Bibutils/
@@ -84,6 +84,9 @@ done
 
 
 %changelog
+* Wed Jun  6 2018 Jens Petersen <petersen@redhat.com> - 6.3-1
+- update to 6.3
+
 * Mon Feb 19 2018 Jens Petersen <petersen@redhat.com> - 6.2-4
 - BR gcc
 
diff --git a/sources b/sources
index 42638ee..ea82d5b 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (bibutils_6.2_src.tgz) = 43d87255c935106ff1ed6b7e4ed636702db99706a4b7ea413f3433f81ffd56679ac8c3f44e8e85d9a4b29689aa494e1b5aef2cfb1b51ce11a85fc9dbb072a95a
+SHA512 (bibutils_6.3_src.tgz) = c803ac593a6bc80bc27ed0889a9396d028d7a37db7eac9b23bc722dd52b1b3aae5d39eb738654d0e09572fb38d5b22868bfebbb4baefb05b8333595ceaff31c5