diff --git a/Project.toml b/Project.toml
index 62fe8ad..f8d1f1f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -11,6 +11,7 @@ VSPGeom = "9b3f6a95-fce2-4bc5-94a2-f99b39986ea6"
 WriteVTK = "64499a7a-5c06-52f2-abe2-ccb03c286192"
 
 [compat]
+FLOWMath = "0.4"
 StaticArrays = "0.12, 1.0"
 VSPGeom = "0.6"
 WriteVTK = "1.8"