diff --git a/docs/HISTORY.md b/docs/HISTORY.md
index 7a569c4..05fba08 100644
--- a/docs/HISTORY.md
+++ b/docs/HISTORY.md
@@ -1,5 +1,12 @@
 # MongoDB Ruby Driver History
 
+### 1.2.1
+2011-1-18
+
+* Enable authentication with connection pooling.
+* Allow custom logging with Connection#instrument (CodeMonkeySteve)
+* Minor fixes and doc improvements.
+
 ### 1.2.0
 2011-1-18
 
diff --git a/ext/cbson/version.h b/ext/cbson/version.h
index f43c53c..4c54cff 100644
--- a/ext/cbson/version.h
+++ b/ext/cbson/version.h
@@ -14,4 +14,4 @@
  * limitations under the License.
  */
 
-#define VERSION "1.2.0"
+#define VERSION "1.2.1"
diff --git a/lib/bson.rb b/lib/bson.rb
index 55baaaf..fe5c684 100644
--- a/lib/bson.rb
+++ b/lib/bson.rb
@@ -18,10 +18,10 @@
 
 $:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 
-MINIMUM_BSON_EXT_VERSION = "1.2.0"
+MINIMUM_BSON_EXT_VERSION = "1.2.1"
 
 module BSON
-  VERSION = "1.2.0"
+  VERSION = "1.2.1"
 
   if defined? Mongo::DEFAULT_MAX_BSON_SIZE
     DEFAULT_MAX_BSON_SIZE = Mongo::DEFAULT_MAX_BSON_SIZE
diff --git a/lib/mongo.rb b/lib/mongo.rb
index 8202d65..9dbaeb4 100644
--- a/lib/mongo.rb
+++ b/lib/mongo.rb
@@ -19,7 +19,7 @@
 $:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 
 module Mongo
-  VERSION = "1.2.0"
+  VERSION = "1.2.1"
 end
 
 module Mongo