diff --git a/.gitignore b/.gitignore
index 54b0bd9..868f551 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 /qtx11extras-opensource-src-5.4.2.tar.xz
 /qtx11extras-opensource-src-5.5.0-rc.tar.xz
 /qtx11extras-opensource-src-5.5.0.tar.xz
+/qtx11extras-opensource-src-5.5.1-rc1.tar.xz
diff --git a/qt5-qtx11extras.spec b/qt5-qtx11extras.spec
index adc138b..e093af4 100644
--- a/qt5-qtx11extras.spec
+++ b/qt5-qtx11extras.spec
@@ -1,12 +1,12 @@
 
 %global qt_module qtx11extras
 
-#define prerelease rc
+%define prerelease rc1
 
 Summary: Qt5 - X11 support library
 Name:    qt5-%{qt_module}
-Version: 5.5.0
-Release: 2%{?dist}
+Version: 5.5.1
+Release: 1%{?dist}
 
 # See LGPL_EXCEPTIONS.txt, LICENSE.GPL3, respectively, for exception details
 License: LGPLv2 with exceptions or GPLv3 with exceptions
@@ -75,6 +75,9 @@ popd
 
 
 %changelog
+* Tue Sep 29 2015 Helio Chissini de Castro <helio@kde.org> - 5.5.1-1
+- Update to Qt 5.5.1 RC1
+
 * Thu Jul 16 2015 Rex Dieter <rdieter@fedoraproject.org> 5.5.0-2
 - tighten qtbase dep (#1233829)
 
diff --git a/sources b/sources
index 278c8d4..52fb129 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-9bee6d5c127ba8cc878ac7c2664d99f9  qtx11extras-opensource-src-5.5.0.tar.xz
+1ac505f222761c6e38fdfcd3a7877e6b  qtx11extras-opensource-src-5.5.1-rc1.tar.xz