diff --git a/Makefile.am b/Makefile.am
index 2ad619a73d..281b909f0b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -904,6 +904,7 @@ ruby_EXTRA_DIST=                                                             \
   ruby/tests/stress.rb                                                       \
   ruby/tests/generated_code.proto                                            \
   ruby/tests/test_import.proto                                               \
+  ruby/tests/test_ruby_package.proto                                         \
   ruby/tests/generated_code_test.rb                                          \
   ruby/tests/well_known_types_test.rb                                        \
   ruby/travis-test.sh