diff --git a/lib/roaring/version.rb b/lib/roaring/version.rb
index 48f20a5..ffb9baa 100644
--- a/lib/roaring/version.rb
+++ b/lib/roaring/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Roaring
-  VERSION = "0.1.0"
+  VERSION = "0.2.0"
 end
diff --git a/roaring.gemspec b/roaring.gemspec
index 716ef9d..cc6569c 100644
--- a/roaring.gemspec
+++ b/roaring.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files = Dir.chdir(__dir__) do
-    `git ls-files -z`.split("\x0").reject do |f|
+    `git ls-files --recurse-submodules -z`.split("\x0").reject do |f|
       (f == __FILE__) || f.match(%r{\A(?:(?:bin|test|spec|features)/|\.(?:git|travis|circleci)|appveyor)})
     end
   end