diff --git a/src/commands/ext/checkout.rs b/src/commands/ext/checkout.rs
index 51176c5..cafcbea 100644
--- a/src/commands/ext/checkout.rs
+++ b/src/commands/ext/checkout.rs
@@ -557,7 +557,7 @@ mod tests {
     fn test_checkout_stamp_requirements() {
         // ext checkout requires: SDK install + ext install (NOT build)
         // Checkout is for extracting files from the installed sysroot
-        let requirements = vec![
+        let requirements = [
             StampRequirement::sdk_install(),
             StampRequirement::ext_install("config-files"),
         ];
diff --git a/src/commands/ext/package.rs b/src/commands/ext/package.rs
index 1b57c02..b84566a 100644
--- a/src/commands/ext/package.rs
+++ b/src/commands/ext/package.rs
@@ -1220,7 +1220,7 @@ ext:
     fn test_package_stamp_requirements() {
         // ext package requires: SDK install + ext install + ext build
         // Verify the stamp requirements are correct
-        let requirements = vec![
+        let requirements = [
             StampRequirement::sdk_install(),
             StampRequirement::ext_install("my-ext"),
             StampRequirement::ext_build("my-ext"),
diff --git a/src/commands/sdk/compile.rs b/src/commands/sdk/compile.rs
index ea4039c..d10af36 100644
--- a/src/commands/sdk/compile.rs
+++ b/src/commands/sdk/compile.rs
@@ -430,7 +430,7 @@ dependencies = { gcc = "*" }
         use crate::utils::stamps::StampRequirement;
 
         // sdk compile requires only: SDK install
-        let requirements = vec![StampRequirement::sdk_install()];
+        let requirements = [StampRequirement::sdk_install()];
 
         // Verify correct stamp path
         assert_eq!(requirements[0].relative_path(), "sdk/install.stamp");
diff --git a/src/utils/image_signing.rs b/src/utils/image_signing.rs
index 50e00dc..9497e21 100644
--- a/src/utils/image_signing.rs
+++ b/src/utils/image_signing.rs
@@ -598,7 +598,7 @@ mod tests {
         let test_hash = [0x42u8; 32]; // Simple test hash
 
         // Sign the hash
-        let signature = secret_key.sign(&test_hash, None);
+        let signature = secret_key.sign(test_hash, None);
 
         // Create signature content
         let sig_content = create_signature_content(
diff --git a/src/utils/signing_keys.rs b/src/utils/signing_keys.rs
index 613e430..7eff8fe 100644
--- a/src/utils/signing_keys.rs
+++ b/src/utils/signing_keys.rs
@@ -438,10 +438,10 @@ mod tests {
         let hash = hasher.finalize();
 
         // Sign the hash (this is what avocado does)
-        let signature = secret_key.sign(&hash, None);
+        let signature = secret_key.sign(hash, None);
 
         // Verify the signature
-        let result = public_key.verify(&hash, &signature);
+        let result = public_key.verify(hash, &signature);
         assert!(
             result.is_ok(),
             "Signature verification should succeed for SHA256 hash"
diff --git a/src/utils/signing_service.rs b/src/utils/signing_service.rs
index 2263257..2e7aff1 100644
--- a/src/utils/signing_service.rs
+++ b/src/utils/signing_service.rs
@@ -598,7 +598,7 @@ mod tests {
         // Here we're just validating the data format and verification process
 
         // Simulate signing on the host side
-        let signature = secret_key.sign(&file_hash, None);
+        let signature = secret_key.sign(file_hash, None);
 
         // Create signature content in the format that would be returned
         let sig_content = serde_json::json!({
@@ -650,7 +650,7 @@ mod tests {
         let reconstructed_sig = ed25519_compact::Signature::from_slice(&sig_array).unwrap();
 
         // Verify the signature with the public key
-        let result = public_key.verify(&file_hash, &reconstructed_sig);
+        let result = public_key.verify(file_hash, &reconstructed_sig);
         assert!(
             result.is_ok(),
             "Signature from response should be verifiable with original public key"
diff --git a/src/utils/stamps.rs b/src/utils/stamps.rs
index b19821e..443f154 100644
--- a/src/utils/stamps.rs
+++ b/src/utils/stamps.rs
@@ -1610,7 +1610,7 @@ ext/my-ext/build.stamp:::null"#;
     fn test_ext_package_requires_sdk_install_ext_install_ext_build() {
         // ext package requires: SDK install + ext install + ext build
         // This is the most demanding extension command
-        let reqs = vec![
+        let reqs = [
             StampRequirement::sdk_install(),
             StampRequirement::ext_install("my-ext"),
             StampRequirement::ext_build("my-ext"),
@@ -1631,7 +1631,7 @@ ext/my-ext/build.stamp:::null"#;
     fn test_ext_checkout_requires_sdk_install_ext_install() {
         // ext checkout requires: SDK install + ext install (but NOT build)
         // Checkout is for extracting files from installed sysroot
-        let reqs = vec![
+        let reqs = [
             StampRequirement::sdk_install(),
             StampRequirement::ext_install("my-ext"),
         ];
@@ -1645,7 +1645,7 @@ ext/my-ext/build.stamp:::null"#;
     fn test_sdk_compile_requires_sdk_install() {
         // sdk compile requires: SDK install only
         // Compile runs scripts in the SDK container after packages are installed
-        let reqs = vec![StampRequirement::sdk_install()];
+        let reqs = [StampRequirement::sdk_install()];
 
         assert_eq!(reqs.len(), 1);
         assert_eq!(reqs[0].fix_command(), "avocado sdk install");