diff --git a/core/src/dictionary/data_element.rs b/core/src/dictionary/data_element.rs
index 72ff0a31d..9c033d495 100644
--- a/core/src/dictionary/data_element.rs
+++ b/core/src/dictionary/data_element.rs
@@ -441,7 +441,7 @@ pub struct DataDictionaryEntryRef<'a> {
     pub vr: VirtualVr,
 }
 
-impl<'a> DataDictionaryEntry for DataDictionaryEntryRef<'a> {
+impl DataDictionaryEntry for DataDictionaryEntryRef<'_> {
     fn tag_range(&self) -> TagRange {
         self.tag
     }
diff --git a/core/src/dictionary/stub.rs b/core/src/dictionary/stub.rs
index 3143bd534..ed7e5a157 100644
--- a/core/src/dictionary/stub.rs
+++ b/core/src/dictionary/stub.rs
@@ -18,7 +18,7 @@ impl DataDictionary for StubDataDictionary {
     }
 }
 
-impl<'a> DataDictionary for &'a StubDataDictionary {
+impl DataDictionary for &'_ StubDataDictionary {
     type Entry = DataDictionaryEntryRef<'static>;
     fn by_name(&self, _: &str) -> Option<&DataDictionaryEntryRef<'static>> {
         None
diff --git a/core/src/dictionary/uid.rs b/core/src/dictionary/uid.rs
index 88473efc1..6c605605a 100644
--- a/core/src/dictionary/uid.rs
+++ b/core/src/dictionary/uid.rs
@@ -75,7 +75,7 @@ impl<'a> UidDictionaryEntryRef<'a> {
     }
 }
 
-impl<'a> UidDictionaryEntry for UidDictionaryEntryRef<'a> {
+impl UidDictionaryEntry for UidDictionaryEntryRef<'_> {
     fn uid(&self) -> &str {
         self.uid
     }
diff --git a/core/src/header.rs b/core/src/header.rs
index a6abd8bf8..a5933fca9 100644
--- a/core/src/header.rs
+++ b/core/src/header.rs
@@ -176,21 +176,21 @@ impl<I, P> HasLength for &DataElement<I, P> {
     }
 }
 
-impl<'a, I, P> Header for &'a DataElement<I, P> {
+impl<I, P> Header for &'_ DataElement<I, P> {
     #[inline]
     fn tag(&self) -> Tag {
         (**self).tag()
     }
 }
 
-impl<'v, I, P> HasLength for DataElementRef<'v, I, P> {
+impl<I, P> HasLength for DataElementRef<'_, I, P> {
     #[inline]
     fn length(&self) -> Length {
         self.header.length()
     }
 }
 
-impl<'v, I, P> Header for DataElementRef<'v, I, P> {
+impl<I, P> Header for DataElementRef<'_, I, P> {
     #[inline]
     fn tag(&self) -> Tag {
         self.header.tag()
diff --git a/core/src/value/person_name.rs b/core/src/value/person_name.rs
index 73bf699ca..79001d1f3 100644
--- a/core/src/value/person_name.rs
+++ b/core/src/value/person_name.rs
@@ -214,7 +214,7 @@ impl<'a> PersonNameBuilder<'a> {
     }
 }
 
-impl<'a> Default for PersonNameBuilder<'a> {
+impl Default for PersonNameBuilder<'_> {
     fn default() -> Self {
         Self::new()
     }
diff --git a/core/src/value/primitive.rs b/core/src/value/primitive.rs
index 3f0d5a8ca..604d5b679 100644
--- a/core/src/value/primitive.rs
+++ b/core/src/value/primitive.rs
@@ -336,7 +336,7 @@ impl From<&[u8]> for PrimitiveValue {
     }
 }
 
-impl<'a> From<PersonName<'a>> for PrimitiveValue {
+impl From<PersonName<'_>> for PrimitiveValue {
     fn from(p: PersonName) -> Self {
         PrimitiveValue::Str(p.to_dicom_string())
     }
@@ -578,16 +578,16 @@ impl PrimitiveValue {
         match self {
             PrimitiveValue::Empty => Cow::from(""),
             PrimitiveValue::Str(values) => {
-                Cow::from(values.trim_end_matches(|c| c == ' ' || c == '\u{0}'))
+                Cow::from(values.trim_end_matches([' ', '\u{0}']))
             }
             PrimitiveValue::Strs(values) => {
                 if values.len() == 1 {
-                    Cow::from(values[0].trim_end_matches(|c| c == ' ' || c == '\u{0}'))
+                    Cow::from(values[0].trim_end_matches([' ', '\u{0}']))
                 } else {
                     Cow::Owned(
                         values
                             .iter()
-                            .map(|s| s.trim_end_matches(|c| c == ' ' || c == '\u{0}'))
+                            .map(|s| s.trim_end_matches([' ', '\u{0}']))
                             .join("\\"),
                     )
                 }
diff --git a/dictionary-std/src/data_element.rs b/dictionary-std/src/data_element.rs
index cd22f85b3..a47aa44d1 100644
--- a/dictionary-std/src/data_element.rs
+++ b/dictionary-std/src/data_element.rs
@@ -138,7 +138,7 @@ impl DataDictionary for StandardDataDictionary {
     }
 }
 
-impl<'a> DataDictionary for &'a StandardDataDictionary {
+impl DataDictionary for &'_ StandardDataDictionary {
     type Entry = DataDictionaryEntryRef<'static>;
 
     fn by_name(&self, name: &str) -> Option<&'static DataDictionaryEntryRef<'static>> {
diff --git a/encoding/src/decode/mod.rs b/encoding/src/decode/mod.rs
index 3dc7db730..419d67737 100644
--- a/encoding/src/decode/mod.rs
+++ b/encoding/src/decode/mod.rs
@@ -372,7 +372,7 @@ where
     }
 }
 
-impl<'a, T: ?Sized> BasicDecode for &'a T
+impl<T: ?Sized> BasicDecode for &'_ T
 where
     T: BasicDecode,
 {
@@ -560,7 +560,7 @@ where
     }
 }
 
-impl<'a, T: ?Sized> Decode for &'a T
+impl<T: ?Sized> Decode for &'_ T
 where
     T: Decode,
 {
diff --git a/encoding/src/text.rs b/encoding/src/text.rs
index 6d19cd844..919b6b8f2 100644
--- a/encoding/src/text.rs
+++ b/encoding/src/text.rs
@@ -103,7 +103,7 @@ where
     }
 }
 
-impl<'a, T: ?Sized> TextCodec for &'a T
+impl<T: ?Sized> TextCodec for &'_ T
 where
     T: TextCodec,
 {
diff --git a/encoding/src/transfer_syntax/mod.rs b/encoding/src/transfer_syntax/mod.rs
index 3f128353d..570c6cfd5 100644
--- a/encoding/src/transfer_syntax/mod.rs
+++ b/encoding/src/transfer_syntax/mod.rs
@@ -348,7 +348,7 @@ pub type DynDataRWAdapter = Box<
         + Sync,
 >;
 
-impl<'a, T, R, W> DataRWAdapter<R, W> for &'a T
+impl<T, R, W> DataRWAdapter<R, W> for &'_ T
 where
     T: DataRWAdapter<R, W>,
     R: Read,
diff --git a/json/src/ser/mod.rs b/json/src/ser/mod.rs
index 525743f64..b7b3ba42d 100644
--- a/json/src/ser/mod.rs
+++ b/json/src/ser/mod.rs
@@ -164,7 +164,7 @@ impl<'a, D> From<&'a [InMemDicomObject<D>]> for DicomJson<&'a [InMemDicomObject<
     }
 }
 
-impl<'a, D> Serialize for DicomJson<&'a [InMemDicomObject<D>]> {
+impl<D> Serialize for DicomJson<&'_ [InMemDicomObject<D>]> {
     /// Serializes the sequence of DICOM objects into a JSON array.
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
     where
diff --git a/json/src/ser/value.rs b/json/src/ser/value.rs
index 5da391190..40e403538 100644
--- a/json/src/ser/value.rs
+++ b/json/src/ser/value.rs
@@ -21,7 +21,7 @@ impl<'a> From<&'a PrimitiveValue> for AsStrings<'a> {
     }
 }
 
-impl<'a> Serialize for AsStrings<'a> {
+impl Serialize for AsStrings<'_> {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
     where
         S: serde::Serializer,
@@ -49,7 +49,7 @@ impl<'a> From<&'a PrimitiveValue> for AsNumbers<'a> {
     }
 }
 
-impl<'a> Serialize for AsNumbers<'a> {
+impl Serialize for AsNumbers<'_> {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
     where
         S: serde::Serializer,
@@ -137,7 +137,7 @@ impl<'a> From<&'a PrimitiveValue> for InlineBinary<'a> {
     }
 }
 
-impl<'a> Serialize for InlineBinary<'a> {
+impl Serialize for InlineBinary<'_> {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
     where
         S: serde::Serializer,
@@ -164,7 +164,7 @@ impl<'a> From<&'a PrimitiveValue> for AsPersonNames<'a> {
     }
 }
 
-impl<'a> Serialize for AsPersonNames<'a> {
+impl Serialize for AsPersonNames<'_> {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
     where
         S: serde::Serializer,
diff --git a/object/src/mem.rs b/object/src/mem.rs
index 9cdd8ff64..5607d7922 100644
--- a/object/src/mem.rs
+++ b/object/src/mem.rs
@@ -940,11 +940,10 @@ where
     /// reporting whether it was present.
     pub fn remove_element_by_name(&mut self, name: &str) -> Result<bool, AccessByNameError> {
         let tag = self.lookup_name(name)?;
-        Ok(self.entries.remove(&tag).is_some()).map(|removed| {
+        Ok(self.entries.remove(&tag).is_some()).inspect(|&removed| {
             if removed {
                 self.len = Length::UNDEFINED;
             }
-            removed
         })
     }
 
@@ -952,9 +951,8 @@ where
     pub fn take_element(&mut self, tag: Tag) -> Result<InMemElement<D>> {
         self.entries
             .remove(&tag)
-            .map(|e| {
+            .inspect(|_| {
                 self.len = Length::UNDEFINED;
-                e
             })
             .context(NoSuchDataElementTagSnafu { tag })
     }
@@ -963,9 +961,8 @@ where
     /// if it is present,
     /// returns `None` otherwise.
     pub fn take(&mut self, tag: Tag) -> Option<InMemElement<D>> {
-        self.entries.remove(&tag).map(|e| {
+        self.entries.remove(&tag).inspect(|_| {
             self.len = Length::UNDEFINED;
-            e
         })
     }
 
@@ -977,9 +974,8 @@ where
         let tag = self.lookup_name(name)?;
         self.entries
             .remove(&tag)
-            .map(|e| {
+            .inspect(|_| {
                 self.len = Length::UNDEFINED;
-                e
             })
             .with_context(|| NoSuchDataElementAliasSnafu {
                 tag,
diff --git a/parser/src/stateful/decode.rs b/parser/src/stateful/decode.rs
index c771e6c08..1e5d8dd6e 100644
--- a/parser/src/stateful/decode.rs
+++ b/parser/src/stateful/decode.rs
@@ -819,7 +819,7 @@ where
     }
 }
 
-impl<'a, D> StatefulDecode for &'a mut D
+impl<D> StatefulDecode for &'_ mut D
 where
     D: StatefulDecode,
 {
@@ -913,9 +913,8 @@ where
             .context(DecodeItemHeaderSnafu {
                 position: self.position,
             })
-            .map(|header| {
+            .inspect(|_| {
                 self.position += 8;
-                header
             })
             .map_err(From::from)
     }
diff --git a/parser/src/stateful/encode.rs b/parser/src/stateful/encode.rs
index 7dc91fe3d..bedf43040 100644
--- a/parser/src/stateful/encode.rs
+++ b/parser/src/stateful/encode.rs
@@ -396,7 +396,7 @@ where
                     position: self.bytes_written,
                 })?;
                 let len = if textual_value.len() % 2 == 1 {
-                    self.to.write_all(&[b' ']).context(WriteValueDataSnafu {
+                    self.to.write_all(b" ").context(WriteValueDataSnafu {
                         position: self.bytes_written,
                     })?;
                     textual_value.len() as u64 + 1
diff --git a/pixeldata/src/lib.rs b/pixeldata/src/lib.rs
index e5c2bbdf8..f9a8616c4 100644
--- a/pixeldata/src/lib.rs
+++ b/pixeldata/src/lib.rs
@@ -1569,8 +1569,9 @@ impl DecodedPixelData<'_> {
     /// To change this behavior,
     /// see [`to_ndarray_with_options`](Self::to_ndarray_with_options).
     #[cfg(feature = "ndarray")]
-    pub fn to_ndarray<T: 'static>(&self) -> Result<Array<T, Ix4>>
+    pub fn to_ndarray<T>(&self) -> Result<Array<T, Ix4>>
     where
+        T: 'static,
         T: NumCast,
         T: Copy,
         T: Send + Sync,
@@ -1603,11 +1604,9 @@ impl DecodedPixelData<'_> {
     /// Note that certain options may be ignored
     /// if they do not apply.
     #[cfg(feature = "ndarray")]
-    pub fn to_ndarray_with_options<T: 'static>(
-        &self,
-        options: &ConvertOptions,
-    ) -> Result<Array<T, Ix4>>
+    pub fn to_ndarray_with_options<T>(&self, options: &ConvertOptions) -> Result<Array<T, Ix4>>
     where
+        T: 'static,
         T: NumCast,
         T: Copy,
         T: Send + Sync,
@@ -1647,8 +1646,9 @@ impl DecodedPixelData<'_> {
     /// To change this behavior,
     /// see [`to_ndarray_frame_with_options`](Self::to_ndarray_frame_with_options).
     #[cfg(feature = "ndarray")]
-    pub fn to_ndarray_frame<T: 'static>(&self, frame: u32) -> Result<Array<T, Ix3>>
+    pub fn to_ndarray_frame<T>(&self, frame: u32) -> Result<Array<T, Ix3>>
     where
+        T: 'static,
         T: NumCast,
         T: Copy,
         T: Send + Sync,
@@ -1680,12 +1680,13 @@ impl DecodedPixelData<'_> {
     /// Note that certain options may be ignored
     /// if they do not apply.
     #[cfg(feature = "ndarray")]
-    pub fn to_ndarray_frame_with_options<T: 'static>(
+    pub fn to_ndarray_frame_with_options<T>(
         &self,
         frame: u32,
         options: &ConvertOptions,
     ) -> Result<Array<T, Ix3>>
     where
+        T: 'static,
         T: NumCast,
         T: Copy,
         T: Send + Sync,
diff --git a/ul/src/association/client.rs b/ul/src/association/client.rs
index 564447efc..8767276bf 100644
--- a/ul/src/association/client.rs
+++ b/ul/src/association/client.rs
@@ -271,7 +271,7 @@ pub struct ClientAssociationOptions<'a> {
     connection_timeout: Option<Duration>,
 }
 
-impl<'a> Default for ClientAssociationOptions<'a> {
+impl Default for ClientAssociationOptions<'_> {
     fn default() -> Self {
         ClientAssociationOptions {
             // the calling AE title
diff --git a/ul/src/association/server.rs b/ul/src/association/server.rs
index de4824b54..210d8955e 100644
--- a/ul/src/association/server.rs
+++ b/ul/src/association/server.rs
@@ -298,7 +298,7 @@ pub struct ServerAssociationOptions<'a, A> {
     timeout: Option<std::time::Duration>,
 }
 
-impl<'a> Default for ServerAssociationOptions<'a, AcceptAny> {
+impl Default for ServerAssociationOptions<'_, AcceptAny> {
     fn default() -> Self {
         ServerAssociationOptions {
             ae_access_control: AcceptAny,
@@ -315,7 +315,7 @@ impl<'a> Default for ServerAssociationOptions<'a, AcceptAny> {
     }
 }
 
-impl<'a> ServerAssociationOptions<'a, AcceptAny> {
+impl ServerAssociationOptions<'_, AcceptAny> {
     /// Create a new set of options for establishing an association.
     pub fn new() -> Self {
         Self::default()