diff --git a/lib/rugged/version.rb b/lib/rugged/version.rb
index 9daa65a8c..f7eea16d8 100644
--- a/lib/rugged/version.rb
+++ b/lib/rugged/version.rb
@@ -1,3 +1,3 @@
 module Rugged
-  Version = VERSION = '0.24.0b14'
+  Version = VERSION = '0.24.0'
 end
diff --git a/test/tree_test.rb b/test/tree_test.rb
index d646c0838..23fc22be5 100644
--- a/test/tree_test.rb
+++ b/test/tree_test.rb
@@ -157,6 +157,13 @@ def test_treebuilder_add_nonexistent_fails
     end
   end
 
+  def test_treebuilder_add_submodules_always_succeeds
+    builder = Rugged::Tree::Builder.new(@repo, @repo.head.target.tree)
+    builder << { :type => :commit, :name => "submodule", :oid => "0000000000000000000000000000000000000000", :filemode => 0160000 }
+    newtree = builder.write
+    assert_equal "ce986db11f99880a0a087ba3220dba61e9afd918", newtree
+  end
+
   def test_treebuilder_add_nonexistent_can_pass
     begin
       Rugged::Settings['strict_object_creation'] = false
diff --git a/vendor/libgit2 b/vendor/libgit2
index edaffe22a..785d8c48e 160000
--- a/vendor/libgit2
+++ b/vendor/libgit2
@@ -1 +1 @@
-Subproject commit edaffe22a205c57022cc365ab20dcbf7e22f68c4
+Subproject commit 785d8c48ea8725691da3c50e7dae8751523d4c30