diff --git a/DifferentiationInterface/docs/Project.toml b/DifferentiationInterface/docs/Project.toml
index 85bdbbee3..c76dd363e 100644
--- a/DifferentiationInterface/docs/Project.toml
+++ b/DifferentiationInterface/docs/Project.toml
@@ -16,3 +16,4 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 
 [compat]
 Documenter = "1"
+DocumenterMermaid = "0.2"