diff --git a/Cargo.toml b/Cargo.toml
index ba39b9c..54d14cc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ secp256k1 = "0.17.2"
 sha2 = "0.9.1"
 failure = "0.1.8"
 serde = "1.0.115"
-serde_json = "1.0.56"
+serde_json = "1.0.57"
 serde_derive = "1.0.115"
 lazy_static = "1.4.0"
 chrono = "0.4.15"