README.md in foreman_bootdisk-13.0.0 vs README.md in foreman_bootdisk-14.0.0

@@ -45,11 +45,12 @@
 | >= 1.12         | ~> 8.0         |
 | >= 1.13         | ~> 9.0         |
 | >= 1.15         | ~> 10.0        |
 | >= 1.17         | ~> 11.0        |
 | >= 1.18         | ~> 12.0        |
-| >= 1.19         | ~> 12.0        |
-| >= 1.20         | ~> 13.0        |
+| >= 1.19         | ~> 13.0        |
+| >= 1.20         | ~> 14.0        |
+| >= 1.21         | ~> 15.0        |
 
 # Usage
 
 ## Configuration