diff --git a/Cargo.toml b/Cargo.toml
index 9d8a2d3..6f18bb5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,7 +30,7 @@ optional = true
 version = "0.3"
 
 [dependencies.digest]
-version = "0.4"
+version = "0.6"
 
 [dependencies.subtle]
 version = "^0.1"
@@ -40,7 +40,7 @@ version = "^0.1"
 version = "^0.6"
 
 [dev-dependencies.sha2]
-version = "0.4"
+version = "0.6"
 
 [dev-dependencies.serde_cbor]
 version = "0.6"