diff --git a/core/src/blocks/extrinsics.rs b/core/src/blocks/extrinsics.rs
index c325ab54ca..d58af73483 100644
--- a/core/src/blocks/extrinsics.rs
+++ b/core/src/blocks/extrinsics.rs
@@ -279,7 +279,7 @@ where
     }
 
     /// Fetch the metadata for this extrinsic.
-    pub fn extrinsic_metadata(&self) -> Result<ExtrinsicMetadataDetails, Error> {
+    pub fn extrinsic_metadata(&self) -> Result<ExtrinsicMetadataDetails<'_>, Error> {
         let pallet = self.metadata.pallet_by_index_err(self.pallet_index())?;
         let variant = pallet
             .call_variant_by_index(self.variant_index())
diff --git a/core/src/events.rs b/core/src/events.rs
index 874bc39b78..1d9d364703 100644
--- a/core/src/events.rs
+++ b/core/src/events.rs
@@ -339,7 +339,7 @@ impl<T: Config> EventDetails<T> {
     }
 
     /// Fetch details from the metadata for this event.
-    pub fn event_metadata(&self) -> EventMetadataDetails {
+    pub fn event_metadata(&self) -> EventMetadataDetails<'_> {
         let pallet = self
             .metadata
             .pallet_by_index(self.pallet_index())
diff --git a/core/src/metadata/metadata_type.rs b/core/src/metadata/metadata_type.rs
index a4e62f8239..4fe325a035 100644
--- a/core/src/metadata/metadata_type.rs
+++ b/core/src/metadata/metadata_type.rs
@@ -25,7 +25,7 @@ impl Metadata {
     pub fn pallet_by_name_err(
         &self,
         name: &str,
-    ) -> Result<subxt_metadata::PalletMetadata, MetadataError> {
+    ) -> Result<subxt_metadata::PalletMetadata<'_>, MetadataError> {
         self.pallet_by_name(name)
             .ok_or_else(|| MetadataError::PalletNameNotFound(name.to_owned()))
     }
@@ -34,7 +34,7 @@ impl Metadata {
     pub fn pallet_by_index_err(
         &self,
         index: u8,
-    ) -> Result<subxt_metadata::PalletMetadata, MetadataError> {
+    ) -> Result<subxt_metadata::PalletMetadata<'_>, MetadataError> {
         self.pallet_by_index(index)
             .ok_or(MetadataError::PalletIndexNotFound(index))
     }
@@ -43,7 +43,7 @@ impl Metadata {
     pub fn runtime_api_trait_by_name_err(
         &self,
         name: &str,
-    ) -> Result<subxt_metadata::RuntimeApiMetadata, MetadataError> {
+    ) -> Result<subxt_metadata::RuntimeApiMetadata<'_>, MetadataError> {
         self.runtime_api_trait_by_name(name)
             .ok_or_else(|| MetadataError::RuntimeTraitNotFound(name.to_owned()))
     }
@@ -52,7 +52,7 @@ impl Metadata {
     pub fn custom_value_by_name_err(
         &self,
         name: &str,
-    ) -> Result<subxt_metadata::CustomValueMetadata, MetadataError> {
+    ) -> Result<subxt_metadata::CustomValueMetadata<'_>, MetadataError> {
         self.custom()
             .get(name)
             .ok_or_else(|| MetadataError::CustomValueNameNotFound(name.to_owned()))
diff --git a/lightclient/src/platform/wasm_platform.rs b/lightclient/src/platform/wasm_platform.rs
index ade56ecd21..7a4b1bb1d9 100644
--- a/lightclient/src/platform/wasm_platform.rs
+++ b/lightclient/src/platform/wasm_platform.rs
@@ -72,17 +72,17 @@ impl PlatformRef for SubxtPlatform {
 
     fn spawn_task(
         &self,
-        _task_name: std::borrow::Cow<str>,
+        _task_name: std::borrow::Cow<'_, str>,
         task: impl future::Future<Output = ()> + Send + 'static,
     ) {
         wasm_bindgen_futures::spawn_local(task);
     }
 
-    fn client_name(&self) -> std::borrow::Cow<str> {
+    fn client_name(&self) -> std::borrow::Cow<'_, str> {
         "subxt-light-client".into()
     }
 
-    fn client_version(&self) -> std::borrow::Cow<str> {
+    fn client_version(&self) -> std::borrow::Cow<'_, str> {
         env!("CARGO_PKG_VERSION").into()
     }
 
diff --git a/metadata/src/lib.rs b/metadata/src/lib.rs
index e96f9ebf63..f680b36883 100644
--- a/metadata/src/lib.rs
+++ b/metadata/src/lib.rs
@@ -240,7 +240,7 @@ impl Metadata {
     }
 
     /// Obtain a unique hash representing this metadata or specific parts of it.
-    pub fn hasher(&self) -> MetadataHasher {
+    pub fn hasher(&self) -> MetadataHasher<'_> {
         MetadataHasher::new(self)
     }
 
diff --git a/subxt/src/blocks/extrinsic_types.rs b/subxt/src/blocks/extrinsic_types.rs
index 3b74615b56..4ba491a7ba 100644
--- a/subxt/src/blocks/extrinsic_types.rs
+++ b/subxt/src/blocks/extrinsic_types.rs
@@ -223,7 +223,7 @@ where
     }
 
     /// See [`subxt_core::blocks::ExtrinsicDetails::extrinsic_metadata()`].
-    pub fn extrinsic_metadata(&self) -> Result<ExtrinsicMetadataDetails, Error> {
+    pub fn extrinsic_metadata(&self) -> Result<ExtrinsicMetadataDetails<'_>, Error> {
         self.inner.extrinsic_metadata().map_err(Into::into)
     }
 
diff --git a/subxt/src/error/dispatch_error.rs b/subxt/src/error/dispatch_error.rs
index 803f8f5939..0d307e7f44 100644
--- a/subxt/src/error/dispatch_error.rs
+++ b/subxt/src/error/dispatch_error.rs
@@ -169,7 +169,7 @@ impl std::fmt::Display for ModuleError {
 
 impl ModuleError {
     /// Return more details about this error.
-    pub fn details(&self) -> Result<ModuleErrorDetails, MetadataError> {
+    pub fn details(&self) -> Result<ModuleErrorDetails<'_>, MetadataError> {
         let pallet = self.metadata.pallet_by_index_err(self.pallet_index())?;
         let variant = pallet
             .error_variant_by_index(self.error_index())
diff --git a/subxt/src/events/events_type.rs b/subxt/src/events/events_type.rs
index 13cafe3036..b3bc52c094 100644
--- a/subxt/src/events/events_type.rs
+++ b/subxt/src/events/events_type.rs
@@ -118,7 +118,7 @@ impl<T: Config> EventDetails<T> {
     }
 
     /// Fetch details from the metadata for this event.
-    pub fn event_metadata(&self) -> EventMetadataDetails {
+    pub fn event_metadata(&self) -> EventMetadataDetails<'_> {
         self.inner.event_metadata()
     }