diff --git a/Makefile b/Makefile
index 934ca16..197126d 100644
--- a/Makefile
+++ b/Makefile
@@ -377,10 +377,11 @@
   EXPORT_SYMBOL  = -export_dynamic
 endif
 
-# OpenBSD 5.7 and above
+# OpenBSD 6.3 and above
 ifeq ($(TARGET),openbsd)
   set_target_defaults = $(call default_opts, \
-    USE_POLL USE_TPROXY USE_KQUEUE USE_ACCEPT4)
+    USE_POLL USE_TPROXY USE_THREAD USE_KQUEUE USE_ACCEPT4 USE_CLOSEFROM   \
+    USE_GETADDRINFO)
 endif
 
 # NetBSD