diff --git a/Cargo.toml b/Cargo.toml
index cf5411e..c4f79e7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ rand          = { version = "0.8", optional = true }
 serde         = { version = "1.0", features = ["derive"] }
 serde_json    = "1.0"
 thiserror     = "1.0"
-yasna         = { version = "0.4", optional = true, features = ["num-bigint"] }
+yasna         = { version = "0.5", optional = true, features = ["num-bigint"] }
 zeroize       = { version = "1.4", features = ["zeroize_derive"] }
 
 [features]