diff --git a/Cargo.toml b/Cargo.toml
index e83a065..02c5da1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ serde = { version = "1.0", optional = true, features = ["derive"] }
 siphasher = "1.0"
 
 [dev-dependencies]
-wincode = { version = "0.2", features = ["derive"] }
+wincode = { version = "0.4", features = ["derive"] }
 
 [features]
 with_serde = ["dep:serde", "siphasher/serde_std"]