README.md in rbnacl-7.0.0 vs README.md in rbnacl-7.1.0

@@ -57,14 +57,12 @@
 You can use RbNaCl on platforms libsodium is supported (see below).
 
 This library aims to support and is [tested against][travis] the following Ruby
 versions:
 
-* Ruby 2.3
-* Ruby 2.4
 * Ruby 2.5
 * Ruby 2.6
-* JRuby 9.1
+* JRuby 9.2
 
 If something doesn't work on one of these versions, it's a bug.
 
 [travis]: http://travis-ci.org/crypto-rb/rbnacl