diff --git a/.gitignore b/.gitignore
index 26fa376..8943e8f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@
 /bson-4.2.0.gem
 /bson-4.2.1.gem
 /bson-4.2.2.gem
+/bson-4.3.0.gem
diff --git a/rubygem-bson.spec b/rubygem-bson.spec
index f7a34d5..ce3a942 100644
--- a/rubygem-bson.spec
+++ b/rubygem-bson.spec
@@ -2,8 +2,8 @@
 %global gem_name bson
 
 Name: rubygem-%{gem_name}
-Version: 4.2.2
-Release: 3%{?dist}
+Version: 4.3.0
+Release: 1%{?dist}
 Summary: Ruby Implementation of the BSON specification
 License: ASL 2.0
 URL: http://bsonspec.org
@@ -19,9 +19,7 @@ BuildRequires: rubygem(rspec)
 Provides: rubygem-bson_ext%{?_isa} = %{version}-%{release}
 Provides: rubygem-bson_ext = %{version}-%{release}
 Provides: rubygem(bson_ext) = %{version}-%{release}
-Obsoletes: rubygem-bson_ext%{?_isa} < 4.1.1-1
 Obsoletes: rubygem-bson_ext < 4.1.1-1
-Obsoletes: rubygem(bson_ext) < 4.1.1-1
 
 %description
 A full featured BSON specification implementation, in Ruby.
@@ -84,6 +82,10 @@ popd
 %{gem_instdir}/spec
 
 %changelog
+* Wed Jan 24 2018 Jun Aruga <jaruga@redhat.com> - 4.3.0-1
+- Update to bson 4.3.0.
+- Remove Obsoletes (rhbz#1537219)
+
 * Sat Jan 20 2018 Björn Esser <besser82@fedoraproject.org> - 4.2.2-3
 - Rebuilt for switch to libxcrypt
 
diff --git a/sources b/sources
index 3a7b44f..40b0e45 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (bson-4.2.2.gem) = df40097d185aa2eeb4b9a3eab7371b85e3f94bd240f4bf87ee3177e901f26d06f21f8ee219287b46ddf08b712a6f8bc1264a935fc0a441f7c0517358407b12c3
+SHA512 (bson-4.3.0.gem) = 6c90b70fc8f0df8eae1a05a1cd7c5a22c2c546bc55448fa1a936bddd24212ac50cf702cb377d227a65b1a7b9a5b8ffe007e3d357eb4c4188e4e873919bb26374