diff --git a/VERSION b/VERSION
index f7abe273d..bac6050cf 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.4.2
\ No newline at end of file
+0.4.3.dev
\ No newline at end of file
diff --git a/vagrant.gemspec b/vagrant.gemspec
index ada50c30a..4e07c85c9 100644
--- a/vagrant.gemspec
+++ b/vagrant.gemspec
@@ -5,9 +5,9 @@
 
 Gem::Specification.new do |s|
   s.name = %q{vagrant}
-  s.version = "0.4.2"
+  s.version = "0.4.3.dev"
 
-  s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
+  s.required_rubygems_version = Gem::Requirement.new("> 1.3.1") if s.respond_to? :required_rubygems_version=
   s.authors = ["Mitchell Hashimoto", "John Bender"]
   s.date = %q{2010-07-02}
   s.default_executable = %q{vagrant}