diff --git a/ext/socket/rubysocket.h b/ext/socket/rubysocket.h
index 92e0f2604d..b4dcd59bb7 100644
--- a/ext/socket/rubysocket.h
+++ b/ext/socket/rubysocket.h
@@ -292,8 +292,8 @@ extern VALUE rb_eResolution;
 #ifdef SOCKS
 extern VALUE rb_cSOCKSSocket;
 #  ifndef SOCKS5
-void SOCKSinit();
-int Rconnect();
+void SOCKSinit(char *);
+int Rconnect(int, const struct sockaddr *, socklen_t);
 #  endif
 #endif
 
diff --git a/version.h b/version.h
index df01c745f3..7d1c49c57f 100644
--- a/version.h
+++ b/version.h
@@ -11,7 +11,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 4
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 49
+#define RUBY_PATCHLEVEL 50
 
 #include "ruby/version.h"
 #include "ruby/internal/abi.h"