diff --git a/Cargo.toml b/Cargo.toml
index edddbcf..4618684 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ authors = ["Mate Antunovic <mateATschnooty.com"]
 readme = "README.md"
 
 [dependencies]
-serde = "^1.0"
+serde = "^1.0.171"
 serde_derive = "^1.0"
 tiny-keccak = { version = "2.0.2", features = ["keccak"] }
 secp256k1 = {version = "0.27.0", features = ["recovery"] }