diff --git a/.gitignore b/.gitignore
index cd3490a..1a4c77d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,3 +28,4 @@
 /gdk3-3.3.6.gem
 /gdk3-3.3.7.gem
 /gdk3-3.3.8.gem
+/gdk3-3.4.0.gem
diff --git a/rubygem-gdk3.spec b/rubygem-gdk3.spec
index 8594e56..eb23b15 100644
--- a/rubygem-gdk3.spec
+++ b/rubygem-gdk3.spec
@@ -7,7 +7,7 @@
 # Planned for F-20+ only
 Summary:	Ruby binding of GDK-3.x
 Name:		rubygem-%{gem_name}
-Version:	3.3.8
+Version:	3.4.0
 Release:	1%{?dist}
 
 # Various files in gem
@@ -85,7 +85,7 @@ find . -name \*.rb -print0 | xargs --null chmod 0644
 gem specification -l --ruby %{SOURCE0} > %{gem_name}.gemspec
 
 # Allow ruby-gnome2 no less than ones
-sed -i -e 's|= 3\.3\.8|>= 3.3.8|' %{gem_name}.gemspec
+sed -i -e 's|= 3\.4\.0|>= 3.4.0|' %{gem_name}.gemspec
 sed -i -e '\@s\.extensions@d'  %{gem_name}.gemspec
 
 gem build %{gem_name}.gemspec
@@ -170,6 +170,9 @@ popd
 %exclude	%{gem_instdir}/test/
 
 %changelog
+* Mon Oct 14 2019 Mamoru TASAKA <mtasaka@fedoraproject.org> - 3.4.0-1
+- 3.4.0
+
 * Fri Oct  4 2019 Mamoru TASAKA <mtasaka@fedoraproject.org> - 3.3.8-1
 - 3.3.8
 
diff --git a/sources b/sources
index a8d9f20..4b6fa34 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (gdk3-3.3.8.gem) = 0cc090b0dc247cc76f84c87f57115614e34abd9f4568861c5fb2ec12b651fa8ee113a129b467d5c6b89b635b2f218f0b27b785129d8fde4d8cea612863bf0822
+SHA512 (gdk3-3.4.0.gem) = bc38f524cf18e405ae87a4733f9c20f298c87c1aa8a53985a61e6b2ca7990fa8bfda5c0a6e31b08e869d6f2bb576f5561b1201e1086d6d9edf098b1259338de9