diff --git a/crates/ledger-core/Cargo.toml b/crates/ledger-core/Cargo.toml
index e143c90..b251ee8 100644
--- a/crates/ledger-core/Cargo.toml
+++ b/crates/ledger-core/Cargo.toml
@@ -15,3 +15,6 @@ serde_json = "1"
 
 [lints]
 workspace = true
+
+[dev-dependencies]
+proptest = "1"