diff --git a/_service b/_service
index 0072ba9..cfde8a4 100644
--- a/_service
+++ b/_service
@@ -2,13 +2,13 @@
 	<service name="tar_scm" mode="disabled">
  		<param name="scm">git</param>
 		<param name="url">git://github.com/openucx/ucx</param>
-		<param name="revision">master</param>
-		<param name="parent-tag">9f8e93fc392a456cc86a60b55f02ef3086a6c616</param>
-		<param name="versionformat">1.3+git@TAG_OFFSET@</param>
+		<param name="revision">756c745a34035d1946f96e7e868a30781d908302</param>
+		<param name="versionformat">@PARENT_TAG@.@TAG_OFFSET@.%h</param>
+		<param name="versionrewrite-pattern">v(.*)</param>
+		<param name="versionrewrite-replacement">\1</param>
 	</service>
 	<service name="recompress" mode="disabled">
 		<param name="file">*.tar</param>
 		<param name="compression">xz</param>
 	</service>
-	<service name="set_version" mode="disabled"/>
 </services>
diff --git a/openucx.changes b/openucx.changes
index 43a23a7..5431f9b 100644
--- a/openucx.changes
+++ b/openucx.changes
@@ -1,3 +1,29 @@
+-------------------------------------------------------------------
+Tue Sep 19 09:26:07 UTC 2017 - nmoreychaisemartin@suse.com
+
+- Switch to version 1.2.1
+  Previous 1.3+ version was based on a development branch.
+
+  Supported platforms
+    - Shared memory: KNEM, CMA, XPMEM, SYSV, Posix
+    - VERBs over InfiniBand and RoCE.
+      VERBS over other RDMA interconnects (iWarp, OmniPath, etc.) is available
+      for community evaluation and has not been tested in context of this release
+    - Cray Gemini and Aries
+    - Architectures: x86_64, ARMv8 (64bit), Power64
+  Features:
+    - Added support for InfiniBand DC and UD transports, including accelerated verbs for Mellanox devices
+    - Full support for PGAS/SHMEM interfaces, blocking and non-blocking APIs
+    - Support for MPI tag matching, both in software and offload mode
+    - Zero copy protocols and rendezvous, registration cache
+    - Handling transport errors
+    - Flow control for DC/RC
+    - Dataypes support: contiguous, IOV, generic
+    - Multi-threading support
+    - Support for ARMv8 64bit architecture
+    - A new API for efficient memory polling
+    - Support for malloc-hooks and memory registration caching
+
 -------------------------------------------------------------------
 Fri Jun 30 09:30:58 UTC 2017 - nmoreychaisemartin@suse.com
 
diff --git a/openucx.spec b/openucx.spec
index e45cc81..ccf5ab2 100644
--- a/openucx.spec
+++ b/openucx.spec
@@ -16,19 +16,19 @@
 #
 
 
-%define version_unconverted 1.3+git44
+%define git_ver .0.756c745a
 
 Name:           openucx
 Summary:        Unifieid Communication X
 License:        BSD-3-Clause
 Group:          Development/Libraries/C and C++
-Version:        1.3+git44
+Version:        1.2.1
 Release:        0
 Url:            http://openucx.org/
 
 #Git-Clone:	git://github.com/openucx/ucx
 #Git-Web:	https://github.com/openucx/ucx
-Source:         ucx-%version.tar.xz
+Source:         ucx-%{version}%{git_ver}.tar.xz
 Patch0:         openucx-s390x-support.patch
 BuildRequires:  autoconf >= 2.63
 BuildRequires:  automake >= 1.10
@@ -128,7 +128,7 @@ Low-level API that expose basic network operations supported by
 underlying hardware.
 
 %prep
-%setup -qn ucx-%version
+%setup -qn  ucx-%{version}%{git_ver}
 %patch0
 
 %build
diff --git a/ucx-1.2.1.0.756c745a.tar.xz b/ucx-1.2.1.0.756c745a.tar.xz
new file mode 100644
index 0000000..ff6cc4b
--- /dev/null
+++ b/ucx-1.2.1.0.756c745a.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:eff0b1e66a2c9bcc93f64e9d0ad47e830d0cdbb520de1f89fd0953c2df45317a
+size 999012
diff --git a/ucx-1.3+git44.tar.xz b/ucx-1.3+git44.tar.xz
deleted file mode 100644
index 77a9b24..0000000
--- a/ucx-1.3+git44.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:20ddc629f9e7d6b9b681fda25b4b4d79f834c97a03b429d7ec017a5c5a5ca55f
-size 1000964