diff --git a/Cargo.toml b/Cargo.toml
index 0a159f9..1149c13 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ num-bigint = "0.4"
 num-traits = "0.2"
 num-integer = "0.1"
 hmac = "0.12"
-sha2 = "0.10"
+sha2 = "0.11"
 hex = "0.4"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"