diff --git a/Cargo.toml b/Cargo.toml
index d2454c5..e7b28d6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,3 +7,4 @@ edition = "2021"
 
 [dependencies]
 arbitrary = "1.2.0"
+proptest = "1.0.0"