diff --git a/lib/readline/version.rb b/lib/readline/version.rb
index fb7a05b..351733c 100644
--- a/lib/readline/version.rb
+++ b/lib/readline/version.rb
@@ -1,6 +1,6 @@
 module Readline
   module Version
     VERSION = "1.3.6"
-    JLINE_VERSION = "2.14.6"
+    JLINE_VERSION = "3.21.0"
   end
 end