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,