diff --git a/ChangeLog b/ChangeLog
index 4de9538603..5900512d6a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+Fri Oct 18 06:02:49 2013  Eric Hodel  <drbrain@segment7.net>
+
+	* lib/rubygems:  Update to RubyGems master f738c67.  Changes:
+
+	  Fixed test bug for ruby with ENABLE_SHARED = no
+
+	* test/rubygems:  ditto.
+
 Fri Oct 18 00:57:07 2013  Tanaka Akira  <akr@fsij.org>
 
 	* lib/tsort.rb (TSort.tsort): Extracted from TSort#tsort.
diff --git a/lib/rubygems.rb b/lib/rubygems.rb
index 7ad35c0c4c..1c84356bd7 100644
--- a/lib/rubygems.rb
+++ b/lib/rubygems.rb
@@ -438,6 +438,18 @@ module Gem
     File.umask old_umask
   end
 
+  ##
+  # The extension API version of ruby.  This includes the static vs non-static
+  # distinction as extensions cannot be shared between the two.
+
+  def self.extension_api_version # :nodoc:
+    if 'no' == RbConfig::CONFIG['ENABLE_SHARED'] then
+      "#{ruby_api_version}-static"
+    else
+      ruby_api_version
+    end
+  end
+
   ##
   # Returns a list of paths matching +glob+ that can be used by a gem to pick
   # up features from other gems.  For example:
diff --git a/lib/rubygems/basic_specification.rb b/lib/rubygems/basic_specification.rb
index 5afa7ee14c..7f738155c9 100644
--- a/lib/rubygems/basic_specification.rb
+++ b/lib/rubygems/basic_specification.rb
@@ -63,15 +63,8 @@ class Gem::BasicSpecification
   #   end
 
   def extension_install_dir
-    ruby_api_version =
-      if 'no' == RbConfig::CONFIG['ENABLE_SHARED'] then
-        "#{Gem.ruby_api_version}-static"
-      else
-        Gem.ruby_api_version
-      end
-
     File.join base_dir, 'extensions', Gem::Platform.local.to_s,
-              ruby_api_version, full_name
+              Gem.extension_api_version, full_name
   end
 
   def find_full_gem_path # :nodoc:
@@ -184,7 +177,7 @@ class Gem::BasicSpecification
 
     relative_extension_install_dir =
       File.join '..', '..', '..', 'extensions', Gem::Platform.local.to_s,
-                Gem.ruby_api_version, full_name
+                Gem.extension_api_version, full_name
 
     @require_paths + [relative_extension_install_dir]
   end
diff --git a/test/rubygems/test_gem.rb b/test/rubygems/test_gem.rb
index a320d54884..88d0b1c432 100644
--- a/test/rubygems/test_gem.rb
+++ b/test/rubygems/test_gem.rb
@@ -338,6 +338,24 @@ class TestGem < Gem::TestCase
     end
   end
 
+  def test_self_extension_install_dir_shared
+    enable_shared, RbConfig::CONFIG['ENABLE_SHARED'] =
+      RbConfig::CONFIG['ENABLE_SHARED'], 'yes'
+
+    assert_equal Gem.ruby_api_version, Gem.extension_api_version
+  ensure
+    RbConfig::CONFIG['ENABLE_SHARED'] = enable_shared
+  end
+
+  def test_self_extension_install_dir_static
+    enable_shared, RbConfig::CONFIG['ENABLE_SHARED'] =
+      RbConfig::CONFIG['ENABLE_SHARED'], 'no'
+
+    assert_equal "#{Gem.ruby_api_version}-static", Gem.extension_api_version
+  ensure
+    RbConfig::CONFIG['ENABLE_SHARED'] = enable_shared
+  end
+
   def test_self_find_files
     cwd = File.expand_path("test/rubygems", @@project_dir)
     $LOAD_PATH.unshift cwd
diff --git a/test/rubygems/test_gem_specification.rb b/test/rubygems/test_gem_specification.rb
index 8efae025e7..5f7c64dd9d 100644
--- a/test/rubygems/test_gem_specification.rb
+++ b/test/rubygems/test_gem_specification.rb
@@ -1366,24 +1366,7 @@ dependencies: []
     assert_equal ['ext/extconf.rb'], ext_spec.extensions
   end
 
-  def test_extension_install_dir_shared
-    enable_shared, RbConfig::CONFIG['ENABLE_SHARED'] =
-      RbConfig::CONFIG['ENABLE_SHARED'], 'yes'
-
-    ext_spec
-
-    refute_empty @ext.extensions
-
-    expected =
-      File.join(@ext.base_dir, 'extensions', Gem::Platform.local.to_s,
-                Gem.ruby_api_version,@ext.full_name)
-
-    assert_equal expected, @ext.extension_install_dir
-  ensure
-    RbConfig::CONFIG['ENABLE_SHARED'] = enable_shared
-  end
-
-  def test_extension_install_dir_static
+  def test_extension_install_dir
     enable_shared, RbConfig::CONFIG['ENABLE_SHARED'] =
       RbConfig::CONFIG['ENABLE_SHARED'], 'no'
 
@@ -1667,6 +1650,9 @@ dependencies: []
   end
 
   def test_require_paths
+    enable_shared, RbConfig::CONFIG['ENABLE_SHARED'] =
+      RbConfig::CONFIG['ENABLE_SHARED'], 'no'
+
     ext_spec
 
     @ext.require_path = 'lib'
@@ -1677,6 +1663,8 @@ dependencies: []
       Pathname(@ext.extension_install_dir).relative_path_from lib
 
     assert_equal ['lib', ext_install_dir.to_s], @ext.require_paths
+  ensure
+    RbConfig::CONFIG['ENABLE_SHARED'] = enable_shared
   end
 
   def test_full_require_paths