diff --git a/src/encoder/compression/deflate.rs b/src/encoder/compression/deflate.rs
index a8a052e..3e5d528 100644
--- a/src/encoder/compression/deflate.rs
+++ b/src/encoder/compression/deflate.rs
@@ -11,21 +11,17 @@ pub struct Deflate {
 /// It allows trading compression ratio for compression speed.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
 #[non_exhaustive]
+#[derive(Default)]
 pub enum DeflateLevel {
     /// The fastest possible compression mode.
     Fast = 1,
     /// The conserative choice between speed and ratio.
+    #[default]
     Balanced = 6,
     /// The best compression available with Deflate.
     Best = 9,
 }
 
-impl Default for DeflateLevel {
-    fn default() -> Self {
-        DeflateLevel::Balanced
-    }
-}
-
 impl Deflate {
     /// Create a new deflate compressor with a specific level of compression.
     pub fn with_level(level: DeflateLevel) -> Self {
diff --git a/src/encoder/tiff_value.rs b/src/encoder/tiff_value.rs
index 43653f4..c9b7af9 100644
--- a/src/encoder/tiff_value.rs
+++ b/src/encoder/tiff_value.rs
@@ -450,7 +450,7 @@ impl TiffValue for str {
     }
 }
 
-impl<'a, T: TiffValue + ?Sized> TiffValue for &'a T {
+impl<T: TiffValue + ?Sized> TiffValue for &'_ T {
     const BYTE_LEN: u8 = T::BYTE_LEN;
     const FIELD_TYPE: Type = T::FIELD_TYPE;
 
diff --git a/tests/decode_images.rs b/tests/decode_images.rs
index 5a62279..a459c86 100644
--- a/tests/decode_images.rs
+++ b/tests/decode_images.rs
@@ -348,7 +348,7 @@ fn test_div_zero() {
 
     match err {
         TiffError::FormatError(TiffFormatError::StripTileTagConflict) => {}
-        unexpected => panic!("Unexpected error {}", unexpected),
+        unexpected => panic!("Unexpected error {unexpected}"),
     }
 }
 
@@ -366,7 +366,7 @@ fn test_too_many_value_bytes() {
 
     match error {
         tiff::TiffError::LimitsExceeded => {}
-        unexpected => panic!("Unexpected error {}", unexpected),
+        unexpected => panic!("Unexpected error {unexpected}"),
     }
 }
 
@@ -497,7 +497,7 @@ fn timeout() {
 
     match error {
         TiffError::FormatError(TiffFormatError::CycleInOffsets) => {}
-        e => panic!("Unexpected error {:?}", e),
+        e => panic!("Unexpected error {e:?}"),
     }
 }
 
diff --git a/tests/encode_images.rs b/tests/encode_images.rs
index af9f610..c183543 100644
--- a/tests/encode_images.rs
+++ b/tests/encode_images.rs
@@ -621,7 +621,7 @@ fn test_rows_per_strip() {
             let img2 = [i; 2 * 100];
             match decoder.read_chunk(i as u32).unwrap() {
                 DecodingResult::U8(data) => assert_eq!(&img2[..], &data[..]),
-                other => panic!("Incorrect strip type {:?}", other),
+                other => panic!("Incorrect strip type {other:?}"),
             }
         }
     }
diff --git a/tests/encode_images_with_compression.rs b/tests/encode_images_with_compression.rs
index 9b8a92f..a355fb1 100644
--- a/tests/encode_images_with_compression.rs
+++ b/tests/encode_images_with_compression.rs
@@ -116,7 +116,7 @@ fn encode_decode_with_compression(compression: Compression) {
         assert_eq!(
             match decoder.read_image() {
                 Ok(DecodingResult::U16(image_data)) => image_data,
-                unexpected => panic!("Descoding RGB failed: {:?}", unexpected),
+                unexpected => panic!("Descoding RGB failed: {unexpected:?}"),
             },
             image_rgb.reference_data()
         );
@@ -126,7 +126,7 @@ fn encode_decode_with_compression(compression: Compression) {
         assert_eq!(
             match decoder.read_image() {
                 Ok(DecodingResult::U8(image_data)) => image_data,
-                unexpected => panic!("Decoding grayscale failed: {:?}", unexpected),
+                unexpected => panic!("Decoding grayscale failed: {unexpected:?}"),
             },
             image_grayscale.reference_data()
         );