diff --git a/docs/Project.toml b/docs/Project.toml
index 59687ec..b7aae2a 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -13,4 +13,5 @@ Changelog = "1.1"
 Documenter = "1.3"
 OrdinaryDiffEqLowStorageRK = "1.3"
 Trixi = "0.12"
+TrixiBottomTopography = "0.1"
 TrixiShallowWater = "0.2"