diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,11 +1,11 @@
 # Utilities for composing functions in Typed Racket
 
-Typed Racket's `compose` only takes two arguments, because in general
-it is difficult to specify that the return types and the argument
-types should be the same for two successive functions in the argument
-list.  This package defines some further utilities to allow
-`compose`-ing more than two functions more comfortable in
-Typed Racket.
+[Typed Racket](https://docs.racket-lang.org/ts-guide/)'s `compose`
+only takes two arguments, because in general it is difficult to
+specify that the return types and the argument types should be the
+same for two successive functions in the argument list.  This package
+defines some further utilities to allow `compose`-ing more than two
+functions more comfortable in Typed Racket.
 
 This package is distributed under the [GNU GPLv3
 licence](https://www.gnu.org/licenses/quick-guide-gplv3.html).