diff --git a/GoGenerateTools.md b/GoGenerateTools.md
index 49210765..45659419 100644
--- a/GoGenerateTools.md
+++ b/GoGenerateTools.md
@@ -24,4 +24,5 @@
 * [swagger-gen-types](https://github.com/dnephin/swagger-gen-types) - go types from swagger specifications
 * [avo](https://github.com/mmcloughlin/avo) - generate assembly code with Go
 * [Wire](https://github.com/google/wire) - Compile-time Dependency Injection for Go
-* [sumgen](https://github.com/smasher164/sumgen) - generate interface method implementations from sum-type declarations
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+* [sumgen](https://github.com/smasher164/sumgen) - generate interface method implementations from sum-type declarations
+* [interface-extractor](https://github.com/urandom/interface-extractor) - generates an interface of a desired type, with only methods used within the package.
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