diff --git a/Project.toml b/Project.toml
index 2540c1156c..fbae06beca 100644
--- a/Project.toml
+++ b/Project.toml
@@ -15,3 +15,4 @@ GPUCompiler = "0.4"
 LLVM = "1.3"
 julia = "1.5"
 Enzyme_jll = "0.0.1"
+Cassette = "0.3"