diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 00c3ddb..2e0ba42 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -91,4 +91,14 @@ jobs:
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v1
         with:
-          files: ./coverage.lcov
\ No newline at end of file
+          files: ./coverage.lcov
+
+  semver:
+    name: semverver
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Check semver
+        uses: obi1kenobi/cargo-semver-checks-action@v1
+        with:
+          crate-name: hawkbit
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..f64864c
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "rust-analyzer.cargo.allFeatures": true
+}
\ No newline at end of file
diff --git a/hawkbit/Cargo.toml b/hawkbit/Cargo.toml
index 6dcc370..18f8d64 100644
--- a/hawkbit/Cargo.toml
+++ b/hawkbit/Cargo.toml
@@ -1,8 +1,8 @@
 [package]
 name = "hawkbit"
-version = "0.6.0"
+version = "0.7.0"
 authors = ["Guillaume Desmottes <guillaume.desmottes@collabora.com>"]
-edition = "2018"
+edition = "2021"
 categories = ["api-bindings"]
 description = "Client side API to interact with Eclipse hawkBit"
 license = "MIT OR Apache-2.0"
@@ -12,29 +12,29 @@ documentation = "https://docs.rs/hawkbit_mock/"
 
 [dependencies]
 reqwest = { version = "0.11", features = ["json", "stream"] }
-tokio = { version = "1.1", features = ["time", "fs"] }
+tokio = { version = "1.21", features = ["time", "fs"] }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 thiserror = "1.0"
-url = "2.2"
-strum = { version = "0.21", features = ["derive"] }
+url = "2.3"
+strum = { version = "0.24", features = ["derive"] }
 cfg-if = "1.0"
-digest = { version = "0.9", optional = true }
-md-5 = { version = "0.9", optional = true }
-sha-1 = { version = "0.9", optional = true }
-sha2 = { version = "0.9", optional = true }
+digest = { version = "0.10", optional = true }
+md-5 = { version = "0.10", optional = true }
+sha-1 = { version = "0.10", optional = true }
+sha2 = { version = "0.10", optional = true }
 generic-array = {version = "0.14", optional = true }
 futures = "0.3"
-bytes = "1.0"
+bytes = "1.2"
 
 [dev-dependencies]
 hawkbit_mock = { path = "../hawkbit_mock/" }
 structopt = "0.3"
 anyhow = "1.0"
 log = "0.4"
-env_logger = "0.8"
+env_logger = "0.9"
 tempdir = "0.3"
-assert_matches = "1.4"
+assert_matches = "1.5"
 
 [features]
 hash-digest= ["digest", "generic-array"]
diff --git a/hawkbit/src/ddi/cancel_action.rs b/hawkbit/src/ddi/cancel_action.rs
index 0cf7217..a6fbec8 100644
--- a/hawkbit/src/ddi/cancel_action.rs
+++ b/hawkbit/src/ddi/cancel_action.rs
@@ -65,6 +65,7 @@ impl CancelAction {
 
 #[derive(Debug, Deserialize)]
 struct CancelReply {
+    #[allow(dead_code)]
     id: String,
     #[serde(rename = "cancelAction")]
     cancel_action: CancelActionReply,
diff --git a/hawkbit/src/ddi/deployment_base.rs b/hawkbit/src/ddi/deployment_base.rs
index f8922db..c2ebdfd 100644
--- a/hawkbit/src/ddi/deployment_base.rs
+++ b/hawkbit/src/ddi/deployment_base.rs
@@ -48,6 +48,7 @@ struct Reply {
     id: String,
     deployment: Deployment,
     #[serde(rename = "actionHistory")]
+    #[allow(dead_code)]
     action_history: Option<ActionHistory>,
 }
 
@@ -61,7 +62,7 @@ struct Deployment {
 }
 
 /// How the download or update should be processed by the target.
-#[derive(Debug, Deserialize, Serialize, Copy, Clone, PartialEq)]
+#[derive(Debug, Deserialize, Serialize, Copy, Clone, PartialEq, Eq)]
 #[serde(rename_all = "lowercase")]
 pub enum Type {
     /// Do not process yet
@@ -73,7 +74,7 @@ pub enum Type {
 }
 
 /// Separation of download and installation by defining a maintenance window for the installation.
-#[derive(Debug, Deserialize, Serialize, Copy, Clone, PartialEq)]
+#[derive(Debug, Deserialize, Serialize, Copy, Clone, PartialEq, Eq)]
 #[serde(rename_all = "lowercase")]
 pub enum MaintenanceWindow {
     /// Maintenance window is available
@@ -109,8 +110,11 @@ struct ArtifactInternal {
 
 #[derive(Debug, Deserialize, Clone)]
 struct Hashes {
+    #[cfg(feature = "hash-sha1")]
     sha1: String,
+    #[cfg(feature = "hash-md5")]
     md5: String,
+    #[cfg(feature = "hash-sha256")]
     sha256: String,
 }
 
@@ -192,6 +196,7 @@ impl<'de> Deserialize<'de> for Links {
 #[derive(Debug)]
 struct Download {
     content: Link,
+    #[allow(dead_code)]
     md5sum: Option<Link>,
 }
 
@@ -205,8 +210,10 @@ struct Links {
 
 #[derive(Debug, Deserialize)]
 struct ActionHistory {
+    #[allow(dead_code)]
     status: String,
     #[serde(default)]
+    #[allow(dead_code)]
     messages: Vec<String>,
 }
 
@@ -396,7 +403,7 @@ impl<'a> Artifact<'a> {
             .links
             .https
             .as_ref()
-            .or_else(|| self.artifact.links.http.as_ref())
+            .or(self.artifact.links.http.as_ref())
             .expect("Missing content link in for artifact");
 
         let resp = self
@@ -506,6 +513,7 @@ impl<'a> Artifact<'a> {
 #[derive(Debug)]
 pub struct DownloadedArtifact {
     file: PathBuf,
+    #[allow(dead_code)]
     hashes: Hashes,
 }
 
@@ -516,6 +524,7 @@ cfg_if::cfg_if! {
             task::Poll,
         };
         use digest::Digest;
+        use digest::OutputSizeUser;
 
         const HASH_BUFFER_SIZE: usize = 4096;
 
@@ -538,8 +547,9 @@ cfg_if::cfg_if! {
         struct DownloadHasher<T>
         where
             T: Digest,
-            <T as Digest>::OutputSize: core::ops::Add,
-            <<T as Digest>::OutputSize as core::ops::Add>::Output: generic_array::ArrayLength<u8>,
+            <T as OutputSizeUser>::OutputSize: core::ops::Add,
+            <<T as OutputSizeUser>::OutputSize as core::ops::Add>::Output: generic_array::ArrayLength<u8>,
+
         {
             hasher: T,
             expected: String,
@@ -549,8 +559,8 @@ cfg_if::cfg_if! {
         impl<T> DownloadHasher<T>
         where
             T: Digest,
-            <T as Digest>::OutputSize: core::ops::Add,
-            <<T as Digest>::OutputSize as core::ops::Add>::Output: generic_array::ArrayLength<u8>
+            <T as OutputSizeUser>::OutputSize: core::ops::Add,
+            <<T as OutputSizeUser>::OutputSize as core::ops::Add>::Output: generic_array::ArrayLength<u8>,
         {
             fn update(&mut self, data: impl AsRef<[u8]>) {
                 self.hasher.update(data);
@@ -603,8 +613,8 @@ cfg_if::cfg_if! {
         struct DownloadStreamHash<T>
         where
             T: Digest,
-            <T as Digest>::OutputSize: core::ops::Add,
-            <<T as Digest>::OutputSize as core::ops::Add>::Output: generic_array::ArrayLength<u8>,
+            <T as OutputSizeUser>::OutputSize: core::ops::Add,
+            <<T as OutputSizeUser>::OutputSize as core::ops::Add>::Output: generic_array::ArrayLength<u8>,
         {
             stream: Box<dyn Stream<Item = Result<Bytes, Error>> + Unpin + Send + Sync>,
             hasher: DownloadHasher<T>,
@@ -613,10 +623,10 @@ cfg_if::cfg_if! {
         impl<T> Stream for DownloadStreamHash<T>
         where
             T: Digest,
-            <T as Digest>::OutputSize: core::ops::Add,
-            <<T as Digest>::OutputSize as core::ops::Add>::Output: generic_array::ArrayLength<u8>,
             T: Unpin,
             T: Clone,
+            <T as OutputSizeUser>::OutputSize: core::ops::Add,
+            <<T as OutputSizeUser>::OutputSize as core::ops::Add>::Output: generic_array::ArrayLength<u8>,
         {
             type Item = Result<Bytes, Error>;
 
@@ -648,7 +658,7 @@ cfg_if::cfg_if! {
     }
 }
 
-impl<'a> DownloadedArtifact {
+impl DownloadedArtifact {
     fn new(file: PathBuf, hashes: Hashes) -> Self {
         Self { file, hashes }
     }
@@ -662,8 +672,9 @@ impl<'a> DownloadedArtifact {
     async fn hash<T>(&self, mut hasher: DownloadHasher<T>) -> Result<(), Error>
     where
         T: Digest,
-        <T as Digest>::OutputSize: core::ops::Add,
-        <<T as Digest>::OutputSize as core::ops::Add>::Output: generic_array::ArrayLength<u8>,
+        <T as OutputSizeUser>::OutputSize: core::ops::Add,
+        <<T as OutputSizeUser>::OutputSize as core::ops::Add>::Output:
+            generic_array::ArrayLength<u8>,
     {
         use tokio::io::AsyncReadExt;
 
diff --git a/hawkbit_mock/Cargo.toml b/hawkbit_mock/Cargo.toml
index 554d53d..f60b48a 100644
--- a/hawkbit_mock/Cargo.toml
+++ b/hawkbit_mock/Cargo.toml
@@ -11,7 +11,7 @@ repository = "https://github.com/collabora/hawkbit-rs"
 documentation = "https://docs.rs/hawkbit/"
 
 [dependencies]
-hawkbit = { version = "0.6.0", path = "../hawkbit/" }
-httpmock = "0.5.4"
+hawkbit = { version = "0.7.0", path = "../hawkbit/" }
+httpmock = "0.6.6"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
diff --git a/hawkbit_mock/src/ddi.rs b/hawkbit_mock/src/ddi.rs
index 2a4392c..514257c 100644
--- a/hawkbit_mock/src/ddi.rs
+++ b/hawkbit_mock/src/ddi.rs
@@ -30,7 +30,7 @@ use std::{
 
 use httpmock::{
     Method::{GET, POST, PUT},
-    MockRef, MockRefExt, MockServer,
+    Mock, MockExt, MockServer,
 };
 use serde_json::{json, Map, Value};
 
@@ -178,7 +178,7 @@ impl Target {
             self.cancel_action.borrow().as_ref(),
         ));
 
-        let mut old = MockRef::new(old, &self.server);
+        let mut old = Mock::new(old, &self.server);
         old.delete();
     }
 
@@ -349,7 +349,7 @@ impl Target {
         finished: Finished,
         progress: Option<serde_json::Value>,
         details: Vec<&str>,
-    ) -> MockRef<'_> {
+    ) -> Mock<'_> {
         self.server.mock(|when, then| {
             let expected = match progress {
                 Some(progress) => json!({
@@ -471,7 +471,7 @@ impl Target {
         execution: Execution,
         finished: Finished,
         details: Vec<&str>,
-    ) -> MockRef<'_> {
+    ) -> Mock<'_> {
         self.server.mock(|when, then| {
             let expected = json!({
                 "id": cancel_id,
@@ -499,14 +499,14 @@ impl Target {
 
     /// Return the number of times the poll API has been called by the client.
     pub fn poll_hits(&self) -> usize {
-        let mock = MockRef::new(self.poll.get(), &self.server);
+        let mock = Mock::new(self.poll.get(), &self.server);
         mock.hits()
     }
 
     /// Return the number of times the target configuration has been uploaded by the client.
     pub fn config_data_hits(&self) -> usize {
         self.config_data.borrow().as_ref().map_or(0, |m| {
-            let mock = MockRef::new(m.mock, &self.server);
+            let mock = Mock::new(m.mock, &self.server);
             mock.hits()
         })
     }
@@ -514,7 +514,7 @@ impl Target {
     /// Return the number of times the deployment details have been fetched by the client.
     pub fn deployment_hits(&self) -> usize {
         self.deployment.borrow().as_ref().map_or(0, |m| {
-            let mock = MockRef::new(m.mock, &self.server);
+            let mock = Mock::new(m.mock, &self.server);
             mock.hits()
         })
     }
@@ -522,7 +522,7 @@ impl Target {
     /// Return the number of times the cancel action URL has been fetched by the client.
     pub fn cancel_action_hits(&self) -> usize {
         self.cancel_action.borrow().as_ref().map_or(0, |m| {
-            let mock = MockRef::new(m.mock, &self.server);
+            let mock = Mock::new(m.mock, &self.server);
             mock.hits()
         })
     }
@@ -536,7 +536,7 @@ struct PendingAction {
 
 impl Drop for PendingAction {
     fn drop(&mut self) {
-        let mut mock = MockRef::new(self.mock, &self.server);
+        let mut mock = Mock::new(self.mock, &self.server);
         mock.delete();
     }
 }