README.md in terradactyl-0.15.1 vs README.md in terradactyl-0.15.2

@@ -187,10 +187,10 @@
     # Install explicit version
     terradactyl install terraform --version=0.15.0-beta2
 
 #### upgrade
 
-Upgrade abstracts the various Terraform subcommands related to upgrading individual stacks (`0.12upgrade` and `0.13upgrade`).
+Upgrade abstracts the various Terraform subcommands related to upgrading individual stacks.
 
     terradactyl upgrade <stack>
 
 ### Meta-commands