diff --git a/hdf5-derive/src/lib.rs b/hdf5-derive/src/lib.rs
index 830e5196..41592f7e 100644
--- a/hdf5-derive/src/lib.rs
+++ b/hdf5-derive/src/lib.rs
@@ -108,7 +108,7 @@ fn impl_enum(names: &[String], values: &[Expr], repr: &Ident) -> TokenStream {
 fn is_phantom_data(ty: &Type) -> bool {
     match *ty {
         Type::Path(TypePath { qself: None, ref path }) => {
-            path.segments.iter().last().map_or(false, |x| x.ident == "PhantomData")
+            path.segments.iter().last().is_some_and(|x| x.ident == "PhantomData")
         }
         _ => false,
     }
diff --git a/hdf5-types/src/array.rs b/hdf5-types/src/array.rs
index cf090924..c6438e2b 100644
--- a/hdf5-types/src/array.rs
+++ b/hdf5-types/src/array.rs
@@ -84,7 +84,7 @@ impl<T: Copy> Deref for VarLenArray<T> {
     }
 }
 
-impl<'a, T: Copy> From<&'a [T]> for VarLenArray<T> {
+impl<T: Copy> From<&[T]> for VarLenArray<T> {
     #[inline]
     fn from(arr: &[T]) -> Self {
         Self::from_slice(arr)
diff --git a/hdf5-types/src/string.rs b/hdf5-types/src/string.rs
index 612f462c..3f17ae46 100644
--- a/hdf5-types/src/string.rs
+++ b/hdf5-types/src/string.rs
@@ -547,6 +547,7 @@ impl<const N: usize> FromStr for FixedUnicode<N> {
     type Err = StringError;
 
     fn from_str(s: &str) -> Result<Self, <Self as FromStr>::Err> {
+        // #[allow(clippy::needless_as_bytes)] // strlen vs. number of bytes
         if s.as_bytes().len() <= N {
             unsafe { Ok(Self::from_bytes(s.as_bytes())) }
         } else {