diff --git a/Cargo.toml b/Cargo.toml
index c6c1ae8..a21821b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ all-features = true
 default = []
 testing = [
     "async",
-    "async-mutex",    
+    "async-lock",
 ]
 
 async = [
@@ -82,7 +82,7 @@ tokio-openssl    = { version = "0.6", optional = true }
 openssl          = { version = "0.10", optional = true, features = ["v110"] }
 
 # for some test utilities
-async-mutex = { version = "1.4", optional = true }
+async-lock = { version = "3.4", optional = true }
 
 
 [dev-dependencies]
diff --git a/src/irc.rs b/src/irc.rs
index df7282f..8abf34f 100644
--- a/src/irc.rs
+++ b/src/irc.rs
@@ -94,7 +94,7 @@ pub fn parse_one(input: &str) -> Result<(usize, IrcMessage<'_>), MessageError> {
     let next = &input[..pos];
     let done = next.len() == input.len();
 
-    let msg = IrcMessage::parse(crate::MaybeOwned::Borrowed(next))?;
+    let msg = IrcMessage::parse(MaybeOwned::Borrowed(next))?;
     Ok((if done { 0 } else { pos }, msg))
 }
 
diff --git a/src/irc/message.rs b/src/irc/message.rs
index 9f7531a..6ef4361 100644
--- a/src/irc/message.rs
+++ b/src/irc/message.rs
@@ -30,7 +30,7 @@ impl<'a> IrcMessage<'a> {
 
         let data = data.trim();
         if data.is_empty() {
-            return Err(super::MessageError::EmptyMessage);
+            return Err(MessageError::EmptyMessage);
         }
 
         let mut p = Parser {
@@ -51,7 +51,7 @@ impl<'a> IrcMessage<'a> {
 
     /// Get the raw string
     pub fn get_raw(&self) -> &str {
-        &*self.raw
+        &self.raw
     }
 
     /// Get the raw tags
diff --git a/src/irc/parser.rs b/src/irc/parser.rs
index be1c6b4..dee801d 100644
--- a/src/irc/parser.rs
+++ b/src/irc/parser.rs
@@ -45,7 +45,7 @@ impl<'a> Parser<'a> {
 
     pub(super) fn command(&mut self) -> MaybeOwnedIndex {
         let input = &self.input[self.pos..];
-        let pos = input.find(' ').unwrap_or_else(|| input.len());
+        let pos = input.find(' ').unwrap_or(input.len());
         self.mark_index(pos, pos + 1)
     }
 
@@ -55,7 +55,7 @@ impl<'a> Parser<'a> {
         }
 
         let input = self.input.get(self.pos..)?;
-        let pos = input.find(" :").unwrap_or_else(|| input.len());
+        let pos = input.find(" :").unwrap_or(input.len());
         Some(self.mark_index(pos, pos))
     }
 
diff --git a/src/irc/tags.rs b/src/irc/tags.rs
index 9280101..781e732 100644
--- a/src/irc/tags.rs
+++ b/src/irc/tags.rs
@@ -26,7 +26,7 @@ impl<'a> Tags<'a> {
 
     /// Gets the raw string that represents the tags
     pub fn raw_tags(&self) -> &'a str {
-        &*self.data
+        self.data
     }
 
     /// Returns how many tags were parsed
@@ -305,14 +305,14 @@ mod tests {
     #[test]
     fn round_trip_escape() {
         let s = r"foo;bar and\foo\rwith\n";
-        assert_eq!(unescape_str(&*escape_str(s)), s);
+        assert_eq!(unescape_str(&escape_str(s)), s);
     }
 
     #[test]
     fn escaped_tag() {
         let s = escape_str(r"@hello;world=abc\ndef");
-        let data = MaybeOwned::Borrowed(&*s);
-        let indices = TagIndices::build_indices(&*data).unwrap();
+        let data = MaybeOwned::Borrowed(&s);
+        let indices = TagIndices::build_indices(&data).unwrap();
 
         let tags = Tags::from_data_indices(&data, &indices);
         assert_eq!(tags.get_unescaped("hello;world").unwrap(), r"abc\ndef");
@@ -322,7 +322,7 @@ mod tests {
     #[test]
     fn invalid_input_missing_leading_at() {
         let data = MaybeOwned::Borrowed("foo=bar;baz=quux");
-        let indices = TagIndices::build_indices(&*data).unwrap();
+        let indices = TagIndices::build_indices(&data).unwrap();
 
         let tags = Tags::from_data_indices(&data, &indices);
         assert!(tags.is_empty());
@@ -333,8 +333,8 @@ mod tests {
         let inputs = &["@", ""];
 
         for input in inputs {
-            let data = MaybeOwned::Borrowed(*input);
-            let indices = TagIndices::build_indices(&*data).unwrap();
+            let data = MaybeOwned::Borrowed(input);
+            let indices = TagIndices::build_indices(&data).unwrap();
 
             let tags = Tags::from_data_indices(&data, &indices);
             assert!(tags.is_empty());
@@ -344,7 +344,7 @@ mod tests {
     #[test]
     fn get_parsed() {
         let input = MaybeOwned::Borrowed("@foo=42;badges=broadcaster/1,subscriber/6");
-        let indices = TagIndices::build_indices(&*input).unwrap();
+        let indices = TagIndices::build_indices(&input).unwrap();
 
         let tags = Tags::from_data_indices(&input, &indices);
         assert_eq!(tags.get_parsed::<_, usize>("foo").unwrap(), 42);
@@ -379,7 +379,7 @@ mod tests {
     #[test]
     fn get_bool() {
         let input = MaybeOwned::Borrowed("@foo=42;ok=true;nope=false");
-        let indices = TagIndices::build_indices(&*input).unwrap();
+        let indices = TagIndices::build_indices(&input).unwrap();
 
         let tags = Tags::from_data_indices(&input, &indices);
         assert!(!tags.get_as_bool("foo"));
@@ -397,8 +397,8 @@ mod tests {
         ];
 
         for input in inputs {
-            let data = MaybeOwned::Borrowed(*input);
-            let indices = TagIndices::build_indices(&*data).unwrap();
+            let data = MaybeOwned::Borrowed(input);
+            let indices = TagIndices::build_indices(&data).unwrap();
             let tags = Tags::from_data_indices(&data, &indices);
 
             assert_eq!(tags.get("foo").unwrap(), "bar");
@@ -417,8 +417,8 @@ mod tests {
         ];
 
         for input in inputs {
-            let data = MaybeOwned::Borrowed(*input);
-            let indices = TagIndices::build_indices(&*data).unwrap();
+            let data = MaybeOwned::Borrowed(input);
+            let indices = TagIndices::build_indices(&data).unwrap();
             let tags = Tags::from_data_indices(&data, &indices);
 
             let len = tags.into_iter().count();
@@ -477,7 +477,7 @@ mod tests {
         ];
 
         let input = MaybeOwned::Borrowed(input);
-        let indices = TagIndices::build_indices(&*input).unwrap();
+        let indices = TagIndices::build_indices(&input).unwrap();
 
         let tags = Tags::from_data_indices(&input, &indices);
 
diff --git a/src/maybe_owned/mod.rs b/src/maybe_owned/mod.rs
index a2674a4..65a167b 100644
--- a/src/maybe_owned/mod.rs
+++ b/src/maybe_owned/mod.rs
@@ -74,7 +74,7 @@ impl<'a> PartialEq<&str> for MaybeOwned<'a> {
 impl<'a> AsRef<str> for MaybeOwned<'a> {
     fn as_ref(&self) -> &str {
         match self {
-            MaybeOwned::Owned(s) => &*s,
+            MaybeOwned::Owned(s) => s,
             MaybeOwned::Borrowed(s) => s,
         }
     }
diff --git a/src/messages/cap.rs b/src/messages/cap.rs
index b8f5c2e..97858a8 100644
--- a/src/messages/cap.rs
+++ b/src/messages/cap.rs
@@ -92,7 +92,7 @@ mod tests {
         ];
         for (msg, expected) in parse(input).map(|s| s.unwrap()).zip(expected) {
             let msg = Cap::from_irc(msg).unwrap();
-            assert_eq!(msg.capability(), Capability::Acknowledged(*expected));
+            assert_eq!(msg.capability(), Capability::Acknowledged(expected));
         }
     }
 
diff --git a/src/messages/global_user_state.rs b/src/messages/global_user_state.rs
index 478c311..350737d 100644
--- a/src/messages/global_user_state.rs
+++ b/src/messages/global_user_state.rs
@@ -171,7 +171,7 @@ mod tests {
             let msg = GlobalUserState::from_irc(msg).unwrap();
             assert!(msg.user_id().is_none());
             assert!(msg.display_name().is_none());
-            assert_eq!(msg.color(), crate::twitch::Color::default());
+            assert_eq!(msg.color(), Color::default());
             assert_eq!(msg.emote_sets(), vec!["0"]);
         }
     }
@@ -183,7 +183,7 @@ mod tests {
             let msg = GlobalUserState::from_irc(msg).unwrap();
             assert_eq!(msg.user_id().unwrap(), "241015868");
             assert_eq!(msg.display_name().unwrap(), "shaken_bot");
-            assert_eq!(msg.color(), crate::twitch::Color::default());
+            assert_eq!(msg.color(), Color::default());
             assert_eq!(msg.emote_sets(), vec!["0"]);
         }
     }
diff --git a/src/messages/user_notice.rs b/src/messages/user_notice.rs
index 4fe9675..1a23645 100644
--- a/src/messages/user_notice.rs
+++ b/src/messages/user_notice.rs
@@ -395,7 +395,7 @@ mod tests {
         for msg in parse(input).map(|s| s.unwrap()) {
             let msg = UserNotice::from_irc(msg).unwrap();
             assert_eq!(msg.channel(), "#giantwaffle");
-            assert_eq!(msg.tags().is_empty(), false);
+            assert!(!msg.tags().is_empty());
         }
     }
 }
diff --git a/src/runner/identity.rs b/src/runner/identity.rs
index 870ecd3..2b82654 100644
--- a/src/runner/identity.rs
+++ b/src/runner/identity.rs
@@ -46,7 +46,7 @@ impl Identity {
         let (nick, _) = crate::ANONYMOUS_LOGIN;
         match self {
             Self::Anonymous { .. } => nick,
-            Self::Basic { name, .. } | Self::Full { name, .. } => &*name,
+            Self::Basic { name, .. } | Self::Full { name, .. } => name,
         }
     }
 }
diff --git a/src/test/conn.rs b/src/test/conn.rs
index 80a4dd0..086583a 100644
--- a/src/test/conn.rs
+++ b/src/test/conn.rs
@@ -6,7 +6,7 @@ use std::{
     task::{Context, Poll},
 };
 
-use async_mutex::Mutex;
+use async_lock::Mutex;
 use futures_lite::io::*;
 
 use crate::connector::Connector;
diff --git a/src/test/tags_builder.rs b/src/test/tags_builder.rs
index bd93159..d167302 100644
--- a/src/test/tags_builder.rs
+++ b/src/test/tags_builder.rs
@@ -183,7 +183,7 @@ mod tests {
             (r"the_win_end\r", r"the_win_end\\r"),
         ];
         for (input, expected) in tests {
-            assert_eq!(tags::escape_str(*input), *expected)
+            assert_eq!(tags::escape_str(input), *expected)
         }
 
         let tests = &["dont_escape+me", "foo=1234"];
@@ -236,7 +236,7 @@ mod tests {
         use crate::FromIrcMessage as _;
 
         let msg = "@badge-info=;badges=broadcaster/1;color=#FF69B4;display-name=museun;emote-only=1;emotes=25:0-4,6-10/81274:12-17;flags=;id=4e160a53-5482-4764-ba28-f224cd59a51f;mod=0;room-id=23196011;subscriber=0;tmi-sent-ts=1601079032426;turbo=0;user-id=23196011;user-type= :museun!museun@museun.tmi.twitch.tv PRIVMSG #museun :Kappa Kappa VoHiYo\r\n";
-        let msg = crate::IrcMessage::parse(crate::MaybeOwned::Borrowed(msg)).unwrap();
+        let msg = crate::IrcMessage::parse(MaybeOwned::Borrowed(msg)).unwrap();
         let pm = crate::messages::Privmsg::from_irc(msg).unwrap();
         let tags = pm.tags();