diff --git a/docs/Project.toml b/docs/Project.toml
index b835d9817e6..bf02cfd93d5 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -43,5 +43,6 @@ OrdinaryDiffEqSSPRK = "1.2"
 OrdinaryDiffEqTsit5 = "1.1"
 Plots = "1.9"
 Test = "1"
+Trixi = "0.13"
 Trixi2Vtk = "0.3.16"
 TrixiBase = "0.1.1"