diff --git a/_data/data.yaml b/_data/data.yaml
index 170b20c..9ce2886 100644
--- a/_data/data.yaml
+++ b/_data/data.yaml
@@ -839,6 +839,9 @@ categories:
           - name: Waterfall
             url: https://workshop.mass-driver.com/waterfall
             description: A tool by Mass-Driver that generates words of equal length after you drop in a font. Great for proofing in early stages of a font, when you're still seeing how the forms interact with each other.
+          - name: Stack & Justify
+            url: https://max-esnee.com/stack-and-justify/
+            description: Stack & Justify is a tool to help create type specimens by finding words or phrases of the same width. Inspired by Mass-Driver’s Waterfall tool.
       - name: Proofing texts
         items:
           - name: adhesiontext