diff --git a/Cargo.toml b/Cargo.toml
index 3bc0d33..420047f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,7 @@ repository = "https://github.com/tormol/encode_unicode"
 documentation = "https://docs.rs/encode_unicode/"
 authors = ["Torbjørn Birch Moltu <t.b.moltu@lyse.net>"]
 edition = "2021"
+include = ["Cargo.toml", "README.md", "LICENSE-MIT", "LICENSE-APACHE", "src/**/*.rs", "RELEASES.md", "AUTHORS.md"]
 
 [dependencies.ascii]
 optional = true
diff --git a/src/decoding_iterators.rs b/src/decoding_iterators.rs
index 92bc060..ea51772 100644
--- a/src/decoding_iterators.rs
+++ b/src/decoding_iterators.rs
@@ -223,7 +223,7 @@ pub struct Utf8CharDecoder<'a> {
     index: usize,
 }
 impl<'a> From<&'a[u8]> for Utf8CharDecoder<'a> {
-    fn from(s: &[u8]) -> Utf8CharDecoder {
+    fn from(s: &[u8]) -> Utf8CharDecoder<'_> {
         Utf8CharDecoder { slice: s, index: 0 }
     }
 }
diff --git a/src/traits.rs b/src/traits.rs
index 53b1211..55c8535 100644
--- a/src/traits.rs
+++ b/src/traits.rs
@@ -605,26 +605,26 @@ fn combine_surrogates(first: u16,  second: u16) -> char {
 /// Adds `.utf8chars()` and `.utf16chars()` iterator constructors to `&str`.
 pub trait StrExt: AsRef<str> {
     /// Equivalent to `.chars()` but produces `Utf8Char`s.
-    fn utf8chars(&self) -> Utf8Chars;
+    fn utf8chars(&self) -> Utf8Chars<'_>;
     /// Equivalent to `.chars()` but produces `Utf16Char`s.
-    fn utf16chars(&self) -> Utf16Chars;
+    fn utf16chars(&self) -> Utf16Chars<'_>;
     /// Equivalent to `.char_indices()` but produces `Utf8Char`s.
-    fn utf8char_indices(&self) -> Utf8CharIndices;
+    fn utf8char_indices(&self) -> Utf8CharIndices<'_>;
     /// Equivalent to `.char_indices()` but produces `Utf16Char`s.
-    fn utf16char_indices(&self) -> Utf16CharIndices;
+    fn utf16char_indices(&self) -> Utf16CharIndices<'_>;
 }
 
 impl StrExt for str {
-    fn utf8chars(&self) -> Utf8Chars {
+    fn utf8chars(&self) -> Utf8Chars<'_> {
         Utf8Chars::from(self)
     }
-    fn utf16chars(&self) -> Utf16Chars {
+    fn utf16chars(&self) -> Utf16Chars<'_> {
         Utf16Chars::from(self)
     }
-    fn utf8char_indices(&self) -> Utf8CharIndices {
+    fn utf8char_indices(&self) -> Utf8CharIndices<'_> {
         Utf8CharIndices::from(self)
     }
-    fn utf16char_indices(&self) -> Utf16CharIndices {
+    fn utf16char_indices(&self) -> Utf16CharIndices<'_> {
         Utf16CharIndices::from(self)
     }
 }
@@ -938,7 +938,7 @@ pub trait SliceExt: Index<RangeFull> {
     ///     (11, Utf8ErrorKind::TooFewBytes), // (but it was not the last element returned!)
     /// ]);
     /// ```
-    fn utf8char_indices(&self) -> Utf8CharDecoder where Self::Output: Borrow<[u8]>;
+    fn utf8char_indices(&self) -> Utf8CharDecoder<'_> where Self::Output: Borrow<[u8]>;
 
 
     /// Decode `u16` slices as UTF-16 and iterate over the codepoints as `Utf16Char`s,
@@ -999,14 +999,14 @@ pub trait SliceExt: Index<RangeFull> {
     /// assert_eq!(iter.next(), None);
     /// assert_eq!(iter.as_slice(), [])
     /// ```
-    fn utf16char_indices(&self) -> Utf16CharDecoder where Self::Output: Borrow<[u16]>;
+    fn utf16char_indices(&self) -> Utf16CharDecoder<'_> where Self::Output: Borrow<[u16]>;
 }
 
 impl<S: ?Sized+Index<RangeFull>> SliceExt for S {
-    fn utf8char_indices(&self) -> Utf8CharDecoder where Self::Output: Borrow<[u8]> {
+    fn utf8char_indices(&self) -> Utf8CharDecoder<'_> where Self::Output: Borrow<[u8]> {
         Utf8CharDecoder::from(self[..].borrow())
     }
-    fn utf16char_indices(&self) -> Utf16CharDecoder where Self::Output: Borrow<[u16]> {
+    fn utf16char_indices(&self) -> Utf16CharDecoder<'_> where Self::Output: Borrow<[u16]> {
         Utf16CharDecoder::from(self[..].borrow())
     }
 }
diff --git a/src/utf16_iterators.rs b/src/utf16_iterators.rs
index 30dcd80..42f9006 100644
--- a/src/utf16_iterators.rs
+++ b/src/utf16_iterators.rs
@@ -155,7 +155,7 @@ pub struct Utf16CharIndices<'a>{
     index: usize,
 }
 impl<'a> From<&'a str> for Utf16CharIndices<'a> {
-    fn from(s: &str) -> Utf16CharIndices {
+    fn from(s: &str) -> Utf16CharIndices<'_> {
         Utf16CharIndices{str: s, index: 0}
     }
 }
@@ -222,7 +222,7 @@ impl<'a> fmt::Debug for Utf16CharIndices<'a> {
 #[derive(Clone)]
 pub struct Utf16Chars<'a>(Utf16CharIndices<'a>);
 impl<'a> From<&'a str> for Utf16Chars<'a> {
-    fn from(s: &str) -> Utf16Chars {
+    fn from(s: &str) -> Utf16Chars<'_> {
         Utf16Chars(Utf16CharIndices::from(s))
     }
 }
diff --git a/src/utf8_iterators.rs b/src/utf8_iterators.rs
index b37c687..b2d4506 100644
--- a/src/utf8_iterators.rs
+++ b/src/utf8_iterators.rs
@@ -234,7 +234,7 @@ pub struct Utf8CharIndices<'a>{
     index: usize,
 }
 impl<'a> From<&'a str> for Utf8CharIndices<'a> {
-    fn from(s: &str) -> Utf8CharIndices {
+    fn from(s: &str) -> Utf8CharIndices<'_> {
         Utf8CharIndices{str: s, index: 0}
     }
 }
@@ -303,7 +303,7 @@ impl<'a> fmt::Debug for Utf8CharIndices<'a> {
 #[derive(Clone)]
 pub struct Utf8Chars<'a>(Utf8CharIndices<'a>);
 impl<'a> From<&'a str> for Utf8Chars<'a> {
-    fn from(s: &str) -> Utf8Chars {
+    fn from(s: &str) -> Utf8Chars<'_> {
         Utf8Chars(Utf8CharIndices::from(s))
     }
 }