diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 50b6db69c51a92b3ea0403303f356ec9c257deb1..49cba73f13bcb2c21237b1be19db96b95e953ad7 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -142,7 +142,7 @@ Code Style
 ---------------
 
 We use automated formatting with Fourmolu to enforce a unified style across the code bases. It is checked in the CI process.
-You can automatically format the code bases with `make style` at the top level of the project.
+After installing Fourmolu ≥ 0.12, you can automatically format the code bases with `make style` at the top level of the project.
 
 Other Conventions
 -----------------