diff --git a/Changes.md b/Changes.md
index f45df8e0..a2fcc62b 100644
--- a/Changes.md
+++ b/Changes.md
@@ -1,3 +1,12 @@
+2.12.3
+-----------
+
+- Revert back to Celluloid's TaskFiber for job processing which has proven to be more
+  stable than TaskThread. [#985]
+
+At this point, if you are experiencing stability issues with Sidekiq in
+Ruby 1.9, please try Ruby 2.0.  It seems to be more stable.
+
 2.12.2
 -----------
 
diff --git a/lib/sidekiq/version.rb b/lib/sidekiq/version.rb
index e73dd554..cc702892 100644
--- a/lib/sidekiq/version.rb
+++ b/lib/sidekiq/version.rb
@@ -1,3 +1,3 @@
 module Sidekiq
-  VERSION = "2.12.2"
+  VERSION = "2.12.3"
 end