diff --git a/Project.toml b/Project.toml
index 2996342..40f15e9 100644
--- a/Project.toml
+++ b/Project.toml
@@ -36,6 +36,7 @@ ViscousFlow = "103da179-b3e4-57c1-99a4-586354eb2c5a"
 ColorTypes = "0.10.9"
 Conda = "1.5.0"
 Dierckx = "0.5.1"
+Gasdynamics1D = "0.2"
 HDF5 = "0.14, 0.15"
 IJulia = "1.23"
 Interpolations = "0.12.10, 0.13"