diff --git a/docs/Formula-Cookbook.md b/docs/Formula-Cookbook.md
index c405c8f71f..f3a12bb025 100644
--- a/docs/Formula-Cookbook.md
+++ b/docs/Formula-Cookbook.md
@@ -233,7 +233,7 @@ end
 
 [jrnl](https://github.com/Homebrew/homebrew-core/blob/master/Formula/jrnl.rb) is an example of a formula that does this well. The end result means the user doesn't have to use `pip` or Python and can just run `jrnl`.
 
-[homebrew-pypi-poet](https://github.com/tdsmith/homebrew-pypi-poet) can help you generate `resource` stanzas for the dependencies of your Python application and [gdm](https://github.com/sparrc/gdm#homebrew) can help you generate `go_resource` stanzas for the dependencies of your Go application.
+[homebrew-pypi-poet](https://github.com/tdsmith/homebrew-pypi-poet) can help you generate `resource` stanzas for the dependencies of your Python application.
 
 ### Install the formula