diff --git a/Project.toml b/Project.toml
index df34eed9..393f2e14 100644
--- a/Project.toml
+++ b/Project.toml
@@ -61,7 +61,7 @@ StaticArrays = "1"
 Statistics = "1"
 Test = "1"
 Timers = "0.1"
-Xfoil = "0.5"
+Xfoil = "0.5, 1"
 YAML = "0.4.13"
 julia = "1.10, 1.11"