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diff --git a/how_to_get_the_programming_languages_running_on_your_computer.mdwn b/how_to_get_the_programming_languages_running_on_your_computer.mdwn
index 8a6f5d8d..235b8abc 100644
--- a/how_to_get_the_programming_languages_running_on_your_computer.mdwn
+++ b/how_to_get_the_programming_languages_running_on_your_computer.mdwn
@@ -150,14 +150,21 @@ The current version of Racket is 6.1.1 (released November 2014).
 
          sudo port install mzscheme
 
+    <!-- mzscheme v4.1.5, from March 2009; latest mzscheme is 4.2.5, from April 2010 -->
+
     If you want the GUI components, I think you'll need to use the
-    "Mac/without MacPorts" installation options above.
+    "Mac/without MacPorts" installation options above. Or you could try the Chicken Scheme implementation instead of Racket. This is more current.
+    To do that, type:
+
+        sudo port install chicken readline
+
+    <!-- chicken v4.8.0.2, from Feb 2013; latest available is 4.9.0.1, from Nov 2014 -->
 
-    I recommend also typing:
+    Whether you use mzscheme or Chicken, I recommend also typing:
 
         sudo port install rlwrap
 
-    then if you ever use the command-line program `mzscheme` (or `racket`), you should start it by typing `rlwrap mzscheme`. This gives
+    then if you ever use the command-line program `mzscheme` (or `racket`, for that matter), you should start it by typing `rlwrap mzscheme` (or whatever). This gives
     you a nice history of the commands you've already typed, which you can scroll up and down in with your
     keyboard arrows.
 
@@ -177,7 +184,7 @@ The current version of Racket is 6.1.1 (released November 2014).
 
         sudo apt-get rlwrap
 
-    then if you ever use the command-line program `mzscheme` (or `racket`), you should start it by typing `rlwrap mzscheme`. This gives
+    then if you ever use the command-line program `mzscheme` (or `racket`), you should start it by typing `rlwrap mzscheme` (or whatever). This gives
     you a nice history of the commands you've already typed, which you can scroll up and down in with your
     keyboard arrows.