diff --git a/Cargo.toml b/Cargo.toml
index a0f2395..d2f6706 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,7 +22,7 @@ web-view = { version = "0.7.2", features = [] }
 tinyfiledialogs = "3.3.10"
 serde = { version = "1.0.123", features = ["derive"] }
 serde_json = "1.0.42"
-num-bigint = "0.2"
+num-bigint = "0.4"
 num-traits = "0.2"
 bincode = "1.2.0"
 base64 = "0.11.0"