diff --git a/src/line.rs b/src/line.rs
index 8923f44..771e243 100644
--- a/src/line.rs
+++ b/src/line.rs
@@ -79,14 +79,14 @@ impl DerefMut for Lines {
     fn deref_mut(&mut self) -> &mut Self::Target { &mut self.0 }
 }
 
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, Clone, PartialEq)]
 pub enum Line {
     Tag(Tag),
     Uri(String),
 }
 
 #[allow(clippy::large_enum_variant)]
-#[derive(Debug, Clone, PartialEq, Eq)]
+#[derive(Debug, Clone, PartialEq)]
 pub enum Tag {
     ExtM3u(tags::ExtM3u),
     ExtXVersion(tags::ExtXVersion),
diff --git a/src/tags/master_playlist/stream_inf.rs b/src/tags/master_playlist/stream_inf.rs
index 33cf5c5..a273d61 100644
--- a/src/tags/master_playlist/stream_inf.rs
+++ b/src/tags/master_playlist/stream_inf.rs
@@ -21,7 +21,7 @@ use crate::{Error, RequiredVersion};
 /// Renditions SHOULD play this Rendition.
 ///
 /// [4.3.4.2. EXT-X-STREAM-INF]: https://tools.ietf.org/html/rfc8216#section-4.3.4.2
-#[derive(PartialOrd, Debug, Clone, PartialEq, Eq)]
+#[derive(PartialOrd, Debug, Clone, PartialEq)]
 pub struct ExtXStreamInf {
     uri: String,
     frame_rate: Option<DecimalFloatingPoint>,
diff --git a/src/tags/shared/start.rs b/src/tags/shared/start.rs
index a69d8b1..54d897a 100644
--- a/src/tags/shared/start.rs
+++ b/src/tags/shared/start.rs
@@ -9,7 +9,7 @@ use crate::{Error, RequiredVersion};
 /// [4.3.5.2. EXT-X-START]
 ///
 /// [4.3.5.2. EXT-X-START]: https://tools.ietf.org/html/rfc8216#section-4.3.5.2
-#[derive(PartialOrd, Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(PartialOrd, Debug, Clone, Copy, PartialEq)]
 pub struct ExtXStart {
     time_offset: SignedDecimalFloatingPoint,
     precise: bool,
diff --git a/src/types/decimal_floating_point.rs b/src/types/decimal_floating_point.rs
index 8ab8b20..f12d5c4 100644
--- a/src/types/decimal_floating_point.rs
+++ b/src/types/decimal_floating_point.rs
@@ -35,8 +35,6 @@ impl DecimalFloatingPoint {
     pub const fn as_f64(self) -> f64 { self.0 }
 }
 
-impl Eq for DecimalFloatingPoint {}
-
 // this trait is implemented manually, so it doesn't construct a
 // [`DecimalFloatingPoint`], with a negative value.
 impl FromStr for DecimalFloatingPoint {
diff --git a/src/types/key_format.rs b/src/types/key_format.rs
index d1268a4..5b534ff 100644
--- a/src/types/key_format.rs
+++ b/src/types/key_format.rs
@@ -31,6 +31,7 @@ impl fmt::Display for KeyFormat {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "{}", quote("identity")) }
 }
 
+/// This tag requires [`ProtocolVersion::V5`].
 impl RequiredVersion for KeyFormat {
     fn required_version(&self) -> ProtocolVersion { ProtocolVersion::V5 }
 }
diff --git a/src/types/key_format_versions.rs b/src/types/key_format_versions.rs
index 4c33031..16537a9 100644
--- a/src/types/key_format_versions.rs
+++ b/src/types/key_format_versions.rs
@@ -15,10 +15,6 @@ use crate::RequiredVersion;
 #[derive(Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug)]
 pub struct KeyFormatVersions(Vec<usize>);
 
-impl Default for KeyFormatVersions {
-    fn default() -> Self { Self(vec![1]) }
-}
-
 impl KeyFormatVersions {
     /// Makes a new [`KeyFormatVersions`].
     pub fn new() -> Self { Self::default() }
@@ -37,6 +33,10 @@ impl KeyFormatVersions {
     pub fn is_default(&self) -> bool { self.0 == vec![1] && self.0.len() == 1 || self.0.is_empty() }
 }
 
+impl Default for KeyFormatVersions {
+    fn default() -> Self { Self(vec![1]) }
+}
+
 impl Deref for KeyFormatVersions {
     type Target = Vec<usize>;
 
@@ -47,6 +47,7 @@ impl DerefMut for KeyFormatVersions {
     fn deref_mut(&mut self) -> &mut Self::Target { &mut self.0 }
 }
 
+/// This tag requires [`ProtocolVersion::V5`].
 impl RequiredVersion for KeyFormatVersions {
     fn required_version(&self) -> ProtocolVersion { ProtocolVersion::V5 }
 }
diff --git a/src/types/signed_decimal_floating_point.rs b/src/types/signed_decimal_floating_point.rs
index 541503b..63e9b80 100644
--- a/src/types/signed_decimal_floating_point.rs
+++ b/src/types/signed_decimal_floating_point.rs
@@ -33,8 +33,6 @@ impl Deref for SignedDecimalFloatingPoint {
     fn deref(&self) -> &Self::Target { &self.0 }
 }
 
-impl Eq for SignedDecimalFloatingPoint {}
-
 #[cfg(test)]
 mod tests {
     use super::*;