diff --git a/src/rabbit_ssl_options.erl b/src/rabbit_ssl_options.erl
index 3150c6a6..bfea5e92 100644
--- a/src/rabbit_ssl_options.erl
+++ b/src/rabbit_ssl_options.erl
@@ -18,8 +18,22 @@
 
 -export([fix/1]).
 
-%% POODLE
--define(BAD_SSL_PROTOCOL_VERSIONS, [sslv3]).
+
+-define(BAD_SSL_PROTOCOL_VERSIONS, [
+                                    %% POODLE
+                                    sslv3,
+
+                                    %% Client side of TLS 1.3 is not yet
+                                    %% implemented in Erlang/OTP 22.0
+                                    %% prereleases. As a consequence,
+                                    %% not sure about the stability of
+                                    %% the server side.
+                                    %%
+                                    %% FIXME: Revisit this decision when
+                                    %% Erlang/OTP 22.0 final release is
+                                    %% out.
+                                    'tlsv1.3'
+                                   ]).
 
 -spec fix(rabbit_types:infos()) -> rabbit_types:infos().