diff --git a/az-cvm-vtpm/Cargo.toml b/az-cvm-vtpm/Cargo.toml
index 5dd4578..ed761a6 100644
--- a/az-cvm-vtpm/Cargo.toml
+++ b/az-cvm-vtpm/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "az-cvm-vtpm"
-version = "0.5.2"
+version = "0.5.3"
 edition = "2021"
 repository = "https://github.com/kinvolk/azure-cvm-tooling/"
 license = "MIT"
@@ -45,6 +45,6 @@ openssl = "0.10"
 serde = { version = "1.0.189", features = ["derive"] }
 serde_json = "1.0.107"
 thiserror = "1.0.38"
-sev = "1.2.0"
+sev = "3.1.1"
 ureq = { version = "2.6.2", default-features = false, features = ["json"] }
 zerocopy = { version = "0.7.26", features = ["derive"] }
diff --git a/az-cvm-vtpm/az-snp-vtpm/Cargo.toml b/az-cvm-vtpm/az-snp-vtpm/Cargo.toml
index 90d0051..8ba59ca 100644
--- a/az-cvm-vtpm/az-snp-vtpm/Cargo.toml
+++ b/az-cvm-vtpm/az-snp-vtpm/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "az-snp-vtpm"
-version = "0.5.2"
+version = "0.5.3"
 edition = "2021"
 repository = "https://github.com/kinvolk/azure-cvm-tooling/"
 license = "MIT"
@@ -17,7 +17,7 @@ path = "src/main.rs"
 required-features = ["attester", "verifier"]
 
 [dependencies]
-az-cvm-vtpm = { path = "..", version = "0.5.2" }
+az-cvm-vtpm = { path = "..", version = "0.5.3" }
 bincode.workspace = true
 clap.workspace = true
 openssl = { workspace = true, optional = true }
diff --git a/az-cvm-vtpm/az-snp-vtpm/example/src/main.rs b/az-cvm-vtpm/az-snp-vtpm/example/src/main.rs
index e9b586a..597df91 100644
--- a/az-cvm-vtpm/az-snp-vtpm/example/src/main.rs
+++ b/az-cvm-vtpm/az-snp-vtpm/example/src/main.rs
@@ -68,7 +68,7 @@ impl RelyingParty {
     pub fn request_secret(&mut self) -> Vec<u8> {
         // placeholder for a real nonce, it is usually randomly generated ephemeral value.
         let nonce = "challenge".as_bytes().to_vec();
-        self.nonce = nonce.clone();
+        self.nonce.clone_from(&nonce);
         nonce
     }
 
diff --git a/az-cvm-vtpm/az-tdx-vtpm/Cargo.toml b/az-cvm-vtpm/az-tdx-vtpm/Cargo.toml
index 34208a1..ff6497d 100644
--- a/az-cvm-vtpm/az-tdx-vtpm/Cargo.toml
+++ b/az-cvm-vtpm/az-tdx-vtpm/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "az-tdx-vtpm"
-version = "0.5.2"
+version = "0.5.3"
 edition = "2021"
 repository = "https://github.com/kinvolk/azure-cvm-tooling/"
 license = "MIT"
@@ -16,7 +16,7 @@ name = "tdx-vtpm"
 path = "src/main.rs"
 
 [dependencies]
-az-cvm-vtpm = { path = "..", version = "0.5.2" }
+az-cvm-vtpm = { path = "..", version = "0.5.3" }
 base64-url = "2.0.0"
 bincode.workspace = true
 serde.workspace = true