diff --git a/Cargo.toml b/Cargo.toml
index 500dffb..01bf2b3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,14 +30,14 @@ optional = true
 version = "0.3"
 
 [dependencies.digest]
-version = "0.4"
+version = "0.6"
 
 [dependencies.generic-array]
 # same version that digest depends on
 version = "^0.6"
 
 [dev-dependencies.sha2]
-version = "0.4"
+version = "0.6"
 
 [dev-dependencies.serde_cbor]
 version = "0.6"