diff --git a/rebar.config b/rebar.config
index 0f23566..22b9966 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,4 +1,4 @@
-{require_otp_vsn, "R14B04|R15B02|R15B03|R16B"}.
+{require_otp_vsn, "R14B04|R15B02|R15B03|R16B|17|18"}.
 
 {erl_opts, [{d, 'NOTEST'},
             warn_obsolete_guard,
