diff --git a/test/socket/test_tcp.rb b/test/socket/test_tcp.rb
index b897ff5642..9aa716f7ec 100644
--- a/test/socket/test_tcp.rb
+++ b/test/socket/test_tcp.rb
@@ -129,7 +129,7 @@ class TestSocket_TCPSocket < Test::Unit::TestCase
               Thread.new { server.accept.close }
             end
             client_threads = Array.new(client_threads_count) do
-              Thread.new { TCPSocket.open(server.addr[3], server.addr[1]) }
+              Thread.new { TCPSocket.open(server.addr[3], server.addr[1]) {} }
             end
             client_threads.each(&:join)
             accept_threads.each(&:join)
diff --git a/version.h b/version.h
index 1bbf7eb455..2f9e4f2cdd 100644
--- a/version.h
+++ b/version.h
@@ -12,7 +12,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 3
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 149
+#define RUBY_PATCHLEVEL 150
 
 #define RUBY_RELEASE_YEAR 2021
 #define RUBY_RELEASE_MONTH 11