Index: README.md
==================================================================
--- README.md
+++ README.md
@@ -38,7 +38,7 @@
    - The Tcl package [tclreadline](http://tclreadline.sourceforge.net/)
 
 On a Debian system you should be able to do the following:
 
 ```
-$ sudo apt install -y tcl86 tcllib tcl-udp tcl-tclreadline
+$ sudo apt install -y tcl8.6 tcllib tcl-udp tcl-tclreadline
 ```