diff --git a/CHANGELOG.md b/CHANGELOG.md
index a70dd5bc1454..485df8e2a180 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -40,7 +40,12 @@
 
 # `libp2p` facade crate
 
-## Version 0.39.0 [unreleased]
+## Version 0.39.1 [2021-07-12]
+
+- Update individual crates.
+    - `libp2p-swarm-derive`
+
+## Version 0.39.0 [2021-07-12]
 
 - Update individual crates.
     - `libp2p-core`
diff --git a/Cargo.toml b/Cargo.toml
index 5dd91c0b361c..78121eab9f91 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "libp2p"
 edition = "2018"
 description = "Peer-to-peer networking library"
-version = "0.39.0"
+version = "0.39.1"
 authors = ["Parity Technologies <admin@parity.io>"]
 license = "MIT"
 repository = "https://github.com/libp2p/rust-libp2p"
@@ -79,7 +79,7 @@ libp2p-pnet = { version = "0.21.0", path = "transports/pnet", optional = true }
 libp2p-relay = { version = "0.3.0", path = "protocols/relay", optional = true }
 libp2p-request-response = { version = "0.12.0", path = "protocols/request-response", optional = true }
 libp2p-swarm = { version = "0.30.0", path = "swarm" }
-libp2p-swarm-derive = { version = "0.23.0", path = "swarm-derive" }
+libp2p-swarm-derive = { version = "0.24.0", path = "swarm-derive" }
 libp2p-uds = { version = "0.29.0", path = "transports/uds", optional = true }
 libp2p-wasm-ext = { version = "0.29.0", path = "transports/wasm-ext", default-features = false, optional = true }
 libp2p-yamux = { version = "0.33.0", path = "muxers/yamux", optional = true }
@@ -99,7 +99,7 @@ libp2p-websocket = { version = "0.30.0", path = "transports/websocket", optional
 
 [dev-dependencies]
 async-std = { version = "1.6.2", features = ["attributes"] }
-env_logger = "0.8.1"
+env_logger = "0.9.0"
 tokio = { version = "1.0.1", features = ["io-util", "io-std", "macros", "rt", "rt-multi-thread"] }
 
 [workspace]
diff --git a/core/CHANGELOG.md b/core/CHANGELOG.md
index 46177efeeea1..dd6596be1cba 100644
--- a/core/CHANGELOG.md
+++ b/core/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.29.0 [unreleased]
+# 0.29.0 [2021-07-12]
 
 - Switch from `parity-multiaddr` to upstream `multiaddr`.
 
diff --git a/core/src/peer_id.rs b/core/src/peer_id.rs
index 5f9a8f786292..c4a12f703b31 100644
--- a/core/src/peer_id.rs
+++ b/core/src/peer_id.rs
@@ -68,8 +68,8 @@ impl PeerId {
 
     /// Parses a `PeerId` from bytes.
     pub fn from_bytes(data: &[u8]) -> Result<PeerId, Error> {
-        Ok(PeerId::from_multihash(Multihash::from_bytes(&data)?)
-            .map_err(|mh| Error::UnsupportedCode(mh.code()))?)
+        PeerId::from_multihash(Multihash::from_bytes(&data)?)
+            .map_err(|mh| Error::UnsupportedCode(mh.code()))
     }
 
     /// Tries to turn a `Multihash` into a `PeerId`.
diff --git a/misc/multistream-select/Cargo.toml b/misc/multistream-select/Cargo.toml
index 7c86be9e6ac2..ef64832d465a 100644
--- a/misc/multistream-select/Cargo.toml
+++ b/misc/multistream-select/Cargo.toml
@@ -19,7 +19,7 @@ unsigned-varint = "0.7"
 
 [dev-dependencies]
 async-std = "1.6.2"
-env_logger = "0.8"
+env_logger = "0.9"
 libp2p-core = { path = "../../core" }
 libp2p-mplex = { path = "../../muxers/mplex" }
 libp2p-plaintext = { path = "../../transports/plaintext" }
diff --git a/muxers/mplex/CHANGELOG.md b/muxers/mplex/CHANGELOG.md
index 877433c6e16e..7350c34199c1 100644
--- a/muxers/mplex/CHANGELOG.md
+++ b/muxers/mplex/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.29.0 [unreleased]
+# 0.29.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/muxers/mplex/Cargo.toml b/muxers/mplex/Cargo.toml
index ae668ac92d4a..7a3a018b5bf9 100644
--- a/muxers/mplex/Cargo.toml
+++ b/muxers/mplex/Cargo.toml
@@ -24,7 +24,7 @@ unsigned-varint = { version = "0.7", features = ["asynchronous_codec"] }
 [dev-dependencies]
 async-std = "1.7.0"
 criterion = "0.3"
-env_logger = "0.8"
+env_logger = "0.9"
 futures = "0.3"
 libp2p-tcp = { path = "../../transports/tcp" }
 libp2p-plaintext = { path = "../../transports/plaintext" }
diff --git a/muxers/mplex/src/codec.rs b/muxers/mplex/src/codec.rs
index 23ba1fcb6329..f56bb146ad0b 100644
--- a/muxers/mplex/src/codec.rs
+++ b/muxers/mplex/src/codec.rs
@@ -244,25 +244,25 @@ impl Encoder for Codec {
     fn encode(&mut self, item: Self::Item, dst: &mut BytesMut) -> Result<(), Self::Error> {
         let (header, data) = match item {
             Frame::Open { stream_id } => {
-                (u64::from(stream_id.num) << 3, Bytes::new())
+                (stream_id.num << 3, Bytes::new())
             },
             Frame::Data { stream_id: LocalStreamId { num, role: Endpoint::Listener }, data } => {
-                (u64::from(num) << 3 | 1, data)
+                (num << 3 | 1, data)
             },
             Frame::Data { stream_id: LocalStreamId { num, role: Endpoint::Dialer }, data } => {
-                (u64::from(num) << 3 | 2, data)
+                (num << 3 | 2, data)
             },
             Frame::Close { stream_id: LocalStreamId { num, role: Endpoint::Listener } } => {
-                (u64::from(num) << 3 | 3, Bytes::new())
+                (num << 3 | 3, Bytes::new())
             },
             Frame::Close { stream_id: LocalStreamId { num, role: Endpoint::Dialer } } => {
-                (u64::from(num) << 3 | 4, Bytes::new())
+                (num << 3 | 4, Bytes::new())
             },
             Frame::Reset { stream_id: LocalStreamId { num, role: Endpoint::Listener } } => {
-                (u64::from(num) << 3 | 5, Bytes::new())
+                (num << 3 | 5, Bytes::new())
             },
             Frame::Reset { stream_id: LocalStreamId { num, role: Endpoint::Dialer } } => {
-                (u64::from(num) << 3 | 6, Bytes::new())
+                (num << 3 | 6, Bytes::new())
             },
         };
 
diff --git a/muxers/yamux/CHANGELOG.md b/muxers/yamux/CHANGELOG.md
index 9698f9f40dda..9c58fbe9f9ad 100644
--- a/muxers/yamux/CHANGELOG.md
+++ b/muxers/yamux/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.33.0 [unreleased]
+# 0.33.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/protocols/floodsub/CHANGELOG.md b/protocols/floodsub/CHANGELOG.md
index 6fe20028e1c8..162fc0eb5635 100644
--- a/protocols/floodsub/CHANGELOG.md
+++ b/protocols/floodsub/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.30.0 [unreleased]
+# 0.30.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/protocols/gossipsub/CHANGELOG.md b/protocols/gossipsub/CHANGELOG.md
index 42694c9a5dd2..0f2a4d6e40ac 100644
--- a/protocols/gossipsub/CHANGELOG.md
+++ b/protocols/gossipsub/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.32.0 [unreleased]
+# 0.32.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/protocols/gossipsub/Cargo.toml b/protocols/gossipsub/Cargo.toml
index 7fd5c05a466a..feaa120606c1 100644
--- a/protocols/gossipsub/Cargo.toml
+++ b/protocols/gossipsub/Cargo.toml
@@ -30,7 +30,7 @@ regex = "1.4.0"
 
 [dev-dependencies]
 async-std = "1.6.3"
-env_logger = "0.8.1"
+env_logger = "0.9.0"
 libp2p-plaintext = { path = "../../transports/plaintext" }
 libp2p-yamux = { path = "../../muxers/yamux" }
 libp2p-mplex = { path = "../../muxers/mplex" }
diff --git a/protocols/identify/CHANGELOG.md b/protocols/identify/CHANGELOG.md
index 567823594d69..861fba49cb10 100644
--- a/protocols/identify/CHANGELOG.md
+++ b/protocols/identify/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.30.0 [unreleased]
+# 0.30.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/protocols/identify/Cargo.toml b/protocols/identify/Cargo.toml
index 257f45eeb663..dc996acff762 100644
--- a/protocols/identify/Cargo.toml
+++ b/protocols/identify/Cargo.toml
@@ -20,7 +20,7 @@ wasm-timer = "0.2"
 
 [dev-dependencies]
 async-std = "1.6.2"
-env_logger = "0.8"
+env_logger = "0.9"
 libp2p-mplex = { path = "../../muxers/mplex" }
 libp2p-noise = { path = "../../transports/noise" }
 libp2p-tcp = { path = "../../transports/tcp" }
diff --git a/protocols/identify/src/handler.rs b/protocols/identify/src/handler.rs
index 0f541a86587a..11c239cdfab9 100644
--- a/protocols/identify/src/handler.rs
+++ b/protocols/identify/src/handler.rs
@@ -211,7 +211,7 @@ impl ProtocolsHandler for IdentifyHandler {
                 };
                 Poll::Ready(ev)
             }
-            Poll::Ready(Err(err)) => Poll::Ready(ProtocolsHandlerEvent::Close(err.into()))
+            Poll::Ready(Err(err)) => Poll::Ready(ProtocolsHandlerEvent::Close(err))
         }
     }
 }
diff --git a/protocols/identify/src/protocol.rs b/protocols/identify/src/protocol.rs
index c3a323ddd0d9..896abd7186cb 100644
--- a/protocols/identify/src/protocol.rs
+++ b/protocols/identify/src/protocol.rs
@@ -207,7 +207,7 @@ where
         Ok(v) => v,
         Err(err) => {
             debug!("Invalid message: {:?}", err);
-            return Err(err.into())
+            return Err(err)
         }
     };
 
diff --git a/protocols/kad/CHANGELOG.md b/protocols/kad/CHANGELOG.md
index 18c03d53faf6..02c18627d0c6 100644
--- a/protocols/kad/CHANGELOG.md
+++ b/protocols/kad/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.31.0 [unreleased]
+# 0.31.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/protocols/kad/src/kbucket.rs b/protocols/kad/src/kbucket.rs
index a77d39f0ee76..ff00b0d7ed09 100644
--- a/protocols/kad/src/kbucket.rs
+++ b/protocols/kad/src/kbucket.rs
@@ -186,7 +186,7 @@ where
     ///
     /// The buckets are ordered by proximity to the `local_key`, i.e. the first
     /// bucket is the closest bucket (containing at most one key).
-    pub fn iter<'a>(&'a mut self) -> impl Iterator<Item = KBucketRef<'a, TKey, TVal>> + 'a {
+    pub fn iter(&mut self) -> impl Iterator<Item = KBucketRef<'_, TKey, TVal>> + '_ {
         let applied_pending = &mut self.applied_pending;
         self.buckets.iter_mut().enumerate().map(move |(i, b)| {
             if let Some(applied) = b.apply_pending() {
diff --git a/protocols/mdns/CHANGELOG.md b/protocols/mdns/CHANGELOG.md
index 010c57cb6b1c..97489bb764f8 100644
--- a/protocols/mdns/CHANGELOG.md
+++ b/protocols/mdns/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.31.0 [unreleased]
+# 0.31.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/protocols/mdns/src/dns.rs b/protocols/mdns/src/dns.rs
index e0645feac82e..fa89caa3fc69 100644
--- a/protocols/mdns/src/dns.rs
+++ b/protocols/mdns/src/dns.rs
@@ -371,8 +371,7 @@ fn append_txt_record(
     if value.len() > MAX_TXT_VALUE_LENGTH {
         return Err(MdnsResponseError::TxtRecordTooLong);
     }
-    let mut buffer = Vec::new();
-    buffer.push(value.len() as u8);
+    let mut buffer = vec![value.len() as u8];
     append_character_string(&mut buffer, value)?;
 
     append_u16(out, buffer.len() as u16);
diff --git a/protocols/ping/CHANGELOG.md b/protocols/ping/CHANGELOG.md
index c656e9aeb6c3..68ff4c0f6c95 100644
--- a/protocols/ping/CHANGELOG.md
+++ b/protocols/ping/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.30.0 [unreleased]
+# 0.30.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/protocols/relay/CHANGELOG.md b/protocols/relay/CHANGELOG.md
index c644204da9fc..4ba329456d02 100644
--- a/protocols/relay/CHANGELOG.md
+++ b/protocols/relay/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.3.0 [unreleased]
+# 0.3.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/protocols/relay/Cargo.toml b/protocols/relay/Cargo.toml
index 66495cf78d51..36c9ff250a46 100644
--- a/protocols/relay/Cargo.toml
+++ b/protocols/relay/Cargo.toml
@@ -29,7 +29,7 @@ wasm-timer = "0.2"
 prost-build = "0.8"
 
 [dev-dependencies]
-env_logger = "0.8.3"
+env_logger = "0.9.0"
 structopt = "0.3.21"
 libp2p = { path = "../.." }
 libp2p-kad = { path = "../kad" }
diff --git a/protocols/request-response/CHANGELOG.md b/protocols/request-response/CHANGELOG.md
index 093f5b4580dd..3f82fe12459f 100644
--- a/protocols/request-response/CHANGELOG.md
+++ b/protocols/request-response/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.12.0 [unreleased]
+# 0.12.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/swarm-derive/CHANGELOG.md b/swarm-derive/CHANGELOG.md
index 52031b8837cf..94ea25f6b106 100644
--- a/swarm-derive/CHANGELOG.md
+++ b/swarm-derive/CHANGELOG.md
@@ -1,3 +1,9 @@
+# 0.24.0 [2021-07-12]
+
+- Handle `NetworkBehaviourAction::CloseConnection`. See [PR 2110] for details.
+
+[PR 2110]: https://github.com/libp2p/rust-libp2p/pull/2110/
+
 # 0.23.0 [2021-04-14]
 
 - Extend `NetworkBehaviour` callbacks, more concretely introducing new `fn
diff --git a/swarm-derive/Cargo.toml b/swarm-derive/Cargo.toml
index 9fa9080b8481..e63b7a71dd86 100644
--- a/swarm-derive/Cargo.toml
+++ b/swarm-derive/Cargo.toml
@@ -2,7 +2,7 @@
 name = "libp2p-swarm-derive"
 edition = "2018"
 description = "Procedural macros of libp2p-core"
-version = "0.23.0"
+version = "0.24.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 license = "MIT"
 repository = "https://github.com/libp2p/rust-libp2p"
diff --git a/swarm/CHANGELOG.md b/swarm/CHANGELOG.md
index ebf7071f0c47..fe91936cb76f 100644
--- a/swarm/CHANGELOG.md
+++ b/swarm/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.30.0 [unreleased]
+# 0.30.0 [2021-07-12]
 
 - Update dependencies.
 
@@ -20,7 +20,7 @@
   peer via an `ExpandedSwarm` or `NetworkBehaviour`. See [PR 2110] for details.
 
 - Expose the `ListenerId` in `SwarmEvent`s that are associated with a listener.
-  
+
   See [PR 2123] for details.
 
 [PR 2100]: https://github.com/libp2p/rust-libp2p/pull/2100
diff --git a/transports/deflate/CHANGELOG.md b/transports/deflate/CHANGELOG.md
index f69325171397..3ba359ac5584 100644
--- a/transports/deflate/CHANGELOG.md
+++ b/transports/deflate/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.29.0 [unreleased]
+# 0.29.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/transports/dns/CHANGELOG.md b/transports/dns/CHANGELOG.md
index 736e25c67ed0..40acc71c23e6 100644
--- a/transports/dns/CHANGELOG.md
+++ b/transports/dns/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.29.0 [unreleased]
+# 0.29.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/transports/dns/Cargo.toml b/transports/dns/Cargo.toml
index 311dfb54c2de..aaa6a82a2e66 100644
--- a/transports/dns/Cargo.toml
+++ b/transports/dns/Cargo.toml
@@ -18,7 +18,7 @@ async-std-resolver = { version = "0.20", optional = true }
 smallvec = "1.6.1"
 
 [dev-dependencies]
-env_logger = "0.8"
+env_logger = "0.9"
 tokio-crate = { package = "tokio", version = "1.0", default-features = false, features = ["rt", "time"] }
 async-std-crate = { package = "async-std", version = "1.6" }
 
diff --git a/transports/noise/CHANGELOG.md b/transports/noise/CHANGELOG.md
index 92e9c1e66211..016ab8e3c86c 100644
--- a/transports/noise/CHANGELOG.md
+++ b/transports/noise/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.32.0 [unreleased]
+# 0.32.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/transports/noise/Cargo.toml b/transports/noise/Cargo.toml
index 2f35a5081be6..9e0c5e88b6da 100644
--- a/transports/noise/Cargo.toml
+++ b/transports/noise/Cargo.toml
@@ -29,7 +29,7 @@ snow = { version = "0.8.0", features = ["default-resolver"], default-features =
 
 [dev-dependencies]
 async-io = "1.2.0"
-env_logger = "0.8.1"
+env_logger = "0.9.0"
 libp2p-tcp = { path = "../../transports/tcp" }
 quickcheck = "0.9.0"
 sodiumoxide = "0.2.5"
diff --git a/transports/noise/src/protocol/x25519.rs b/transports/noise/src/protocol/x25519.rs
index 389c5b94e93b..c4e79bc33aee 100644
--- a/transports/noise/src/protocol/x25519.rs
+++ b/transports/noise/src/protocol/x25519.rs
@@ -235,7 +235,7 @@ impl snow::types::Dh for Keypair<X25519> {
 
     fn set(&mut self, sk: &[u8]) {
         let mut secret = [0u8; 32];
-        secret.copy_from_slice(&sk[..]);
+        secret.copy_from_slice(&sk);
         self.secret = SecretKey(X25519(secret)); // Copy
         self.public = PublicKey(X25519(x25519(secret, X25519_BASEPOINT_BYTES)));
         secret.zeroize();
diff --git a/transports/noise/src/protocol/x25519_spec.rs b/transports/noise/src/protocol/x25519_spec.rs
index c2f3209580b3..16e3ffeafee4 100644
--- a/transports/noise/src/protocol/x25519_spec.rs
+++ b/transports/noise/src/protocol/x25519_spec.rs
@@ -146,7 +146,7 @@ impl snow::types::Dh for Keypair<X25519Spec> {
 
     fn set(&mut self, sk: &[u8]) {
         let mut secret = [0u8; 32];
-        secret.copy_from_slice(&sk[..]);
+        secret.copy_from_slice(&sk);
         self.secret = SecretKey(X25519Spec(secret)); // Copy
         self.public = PublicKey(X25519Spec(x25519(secret, X25519_BASEPOINT_BYTES)));
         secret.zeroize();
diff --git a/transports/plaintext/CHANGELOG.md b/transports/plaintext/CHANGELOG.md
index 3b6a67e6930c..6ed0eb794424 100644
--- a/transports/plaintext/CHANGELOG.md
+++ b/transports/plaintext/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.29.0 [unreleased]
+# 0.29.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/transports/plaintext/Cargo.toml b/transports/plaintext/Cargo.toml
index 87c7d4792032..58ae9b025833 100644
--- a/transports/plaintext/Cargo.toml
+++ b/transports/plaintext/Cargo.toml
@@ -20,7 +20,7 @@ unsigned-varint = { version = "0.7", features = ["asynchronous_codec"] }
 void = "1.0.2"
 
 [dev-dependencies]
-env_logger = "0.8.1"
+env_logger = "0.9.0"
 quickcheck = "0.9.0"
 rand = "0.7"
 
diff --git a/transports/tcp/CHANGELOG.md b/transports/tcp/CHANGELOG.md
index ebf67d0857ce..6b01961caa32 100644
--- a/transports/tcp/CHANGELOG.md
+++ b/transports/tcp/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.29.0 [unreleased]
+# 0.29.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/transports/tcp/Cargo.toml b/transports/tcp/Cargo.toml
index 04eaa28079d7..96599bfdfc42 100644
--- a/transports/tcp/Cargo.toml
+++ b/transports/tcp/Cargo.toml
@@ -30,4 +30,4 @@ async-io = ["async-io-crate", "if-watch"]
 [dev-dependencies]
 async-std = { version = "1.6.5", features = ["attributes"] }
 tokio-crate = { package = "tokio", version = "1.0.1", default-features = false, features = ["net", "rt"] }
-env_logger = "0.8.2"
+env_logger = "0.9.0"
diff --git a/transports/uds/CHANGELOG.md b/transports/uds/CHANGELOG.md
index a14aaf82f33d..60618cc1df20 100644
--- a/transports/uds/CHANGELOG.md
+++ b/transports/uds/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.29.0 [unreleased]
+# 0.29.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/transports/wasm-ext/CHANGELOG.md b/transports/wasm-ext/CHANGELOG.md
index c8331b7d2e15..fc8f8e69d6d8 100644
--- a/transports/wasm-ext/CHANGELOG.md
+++ b/transports/wasm-ext/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.29.0 [unreleased]
+# 0.29.0 [2021-07-12]
 
 - Update dependencies.
 
diff --git a/transports/websocket/CHANGELOG.md b/transports/websocket/CHANGELOG.md
index 5b7bfb023a04..81d98bfb77b3 100644
--- a/transports/websocket/CHANGELOG.md
+++ b/transports/websocket/CHANGELOG.md
@@ -1,4 +1,4 @@
-# 0.30.0 [unreleased]
+# 0.30.0 [2021-07-12]
 
 - Update dependencies.