diff --git a/mono-3.12.0.tar.bz2 b/mono-3.12.0.tar.bz2
deleted file mode 100644
index 87fc0a0..0000000
--- a/mono-3.12.0.tar.bz2
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:8fdc69329c8d669d1c5e5bc922a5df8a3ed61a72344b92e5a073809bf1b36783
-size 73527734
diff --git a/mono-3.12.1.tar.bz2 b/mono-3.12.1.tar.bz2
new file mode 100644
index 0000000..a4dc1cd
--- /dev/null
+++ b/mono-3.12.1.tar.bz2
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5d8cf153af2948c06bc9fbf5088f6834868e4db8e5f41c7cff76da173732b60d
+size 73487974
diff --git a/mono-core.changes b/mono-core.changes
index 6a3e727..496db9d 100644
--- a/mono-core.changes
+++ b/mono-core.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Mar 10 17:10:58 UTC 2015 - mailaender@opensuse.org
+
+- update to 3.12.1 - security hotfix bsc#921312
+  * http://www.mono-project.com/news/2015/03/07/mono-tls-vulnerability/
+
 -------------------------------------------------------------------
 Sat Feb 28 10:35:11 UTC 2015 - mailaender@opensuse.org
 
diff --git a/mono-core.spec b/mono-core.spec
index ead1cd8..e7d19cd 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -21,7 +21,7 @@
 %define sgen yes
 
 Name:           mono-core
-Version:        3.12.0
+Version:        3.12.1
 Release:        0
 Summary:        Cross-platform, Open Source, .NET development framework
 License:        LGPL-2.1 and MIT and MS-PL