diff --git a/Project.toml b/Project.toml
index 3070640..5e6185f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -34,6 +34,7 @@ Observables = "0.5"
 RecipesBase = "1"
 Rotations = "1"
 StaticArrays = "1"
+TransformsBase = "1"
 julia = "1.9"
 
 [extras]