diff --git a/HISTORY b/HISTORY
index b4401e0..e011afe 100644
--- a/HISTORY
+++ b/HISTORY
@@ -1,3 +1,10 @@
+0.18.1 2009-12-05
+* Fixed issue with negative dates in Ruby 1.9
+* Minor refactorings for C extension and BSON classes
+* Ensure UTF-8 in Ruby 1.8
+* Fix for connections on non-default port (Delano Mandelbaum)
+* More explicit test suite tasks for running with/without C extension.
+
 0.18 2009-11-25
 * Connections now support connection pooling. See http://api.mongodb.org/ruby/0.18/classes/Mongo/Connection.html#M000158
 * Deprecated :auto_reconnect option on connection; if the driver fails to
diff --git a/ext/cbson/version.h b/ext/cbson/version.h
index 1fda318..0372fed 100644
--- a/ext/cbson/version.h
+++ b/ext/cbson/version.h
@@ -14,4 +14,4 @@
  * limitations under the License.
  */
 
-#define VERSION "0.18\0"
+#define VERSION "0.18.1"
diff --git a/lib/mongo.rb b/lib/mongo.rb
index a967c47..6055192 100644
--- a/lib/mongo.rb
+++ b/lib/mongo.rb
@@ -4,7 +4,7 @@ module Mongo
   ASCENDING = 1
   DESCENDING = -1
 
-  VERSION = "0.18"
+  VERSION = "0.18.1"
 end
 
 begin
diff --git a/mongo-extensions.gemspec b/mongo-extensions.gemspec
index 83c06a9..5019945 100644
--- a/mongo-extensions.gemspec
+++ b/mongo-extensions.gemspec
@@ -1,6 +1,6 @@
 require 'lib/mongo'
 VERSION_HEADER = File.open(File.join(File.dirname(__FILE__), 'ext', 'cbson', 'version.h'), "r") 
-VERSION        = VERSION_HEADER.read.scan(/VERSION\s+"(\d+\.\d+)\\/)[0][0]
+VERSION        = VERSION_HEADER.read.scan(/VERSION\s+"(\d+\.\d+(\.\d+)?)\"/)[0][0]
 Gem::Specification.new do |s|
   s.name = 'mongo_ext'