diff --git a/src/containers/indexed.rs b/src/containers/indexed.rs
index 355d8c28..f4b0f8cf 100644
--- a/src/containers/indexed.rs
+++ b/src/containers/indexed.rs
@@ -44,7 +44,7 @@ pub struct IndexedConsignment<'c, const TRANSFER: bool> {
     witness_idx: BTreeMap<XWitnessId, &'c XPubWitness>,
 }
 
-impl<'c, const TRANSFER: bool> Deref for IndexedConsignment<'c, TRANSFER> {
+impl<const TRANSFER: bool> Deref for IndexedConsignment<'_, TRANSFER> {
     type Target = Consignment<TRANSFER>;
 
     fn deref(&self) -> &Self::Target { self.consignment }
diff --git a/src/interface/contractum.rs b/src/interface/contractum.rs
index 01cbdbe6..107dc970 100644
--- a/src/interface/contractum.rs
+++ b/src/interface/contractum.rs
@@ -34,7 +34,7 @@ use super::{
 
 struct ArgMapDisplay<'a>(&'a ArgMap);
 
-impl<'a> Display for ArgMapDisplay<'a> {
+impl Display for ArgMapDisplay<'_> {
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
         for (i, (name, occ)) in self.0.iter().enumerate() {
             if i > 0 {
@@ -96,7 +96,7 @@ impl<'a> OpIfaceDisplay<'a> {
     }
 }
 
-impl<'a> Display for OpIfaceDisplay<'a> {
+impl Display for OpIfaceDisplay<'_> {
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
         if !self.errors.is_empty() {
             write!(f, "\t\terrors: ")?;
@@ -159,7 +159,7 @@ impl<'a> IfaceDisplay<'a> {
     }
 }
 
-impl<'a> Display for IfaceDisplay<'a> {
+impl Display for IfaceDisplay<'_> {
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
         fn sugar(f: &mut Formatter<'_>, required: bool, multiple: bool) -> fmt::Result {
             match (required, multiple) {
diff --git a/src/persistence/memory.rs b/src/persistence/memory.rs
index 5b5d229e..930cb2ea 100644
--- a/src/persistence/memory.rs
+++ b/src/persistence/memory.rs
@@ -1129,7 +1129,7 @@ pub struct MemContractWriter<'mem> {
     contract: &'mem mut MemContractState,
 }
 
-impl<'mem> ContractStateWrite for MemContractWriter<'mem> {
+impl ContractStateWrite for MemContractWriter<'_> {
     type Error = MemError;
 
     /// # Panics
diff --git a/src/persistence/stock.rs b/src/persistence/stock.rs
index 4b778ca1..817e19f8 100644
--- a/src/persistence/stock.rs
+++ b/src/persistence/stock.rs
@@ -505,12 +505,12 @@ impl<S: StashProvider, H: StateProvider, P: IndexProvider> Stock<S, H, P> {
         Ok(self.stash.geneses()?.map(ContractInfo::with))
     }
 
-    #[allow(clippy::multiple_bound_locations)]
+    #[allow(clippy::multiple_bound_locations, clippy::type_complexity)]
     pub fn contracts_by<'a, C: IfaceClass + 'a>(
         &'a self,
     ) -> Result<
         impl Iterator<
-                Item = <C::Wrapper<H::ContractRead<'_>> as IfaceWrapper<H::ContractRead<'_>>>::Info,
+                Item = <C::Wrapper<H::ContractRead<'a>> as IfaceWrapper<H::ContractRead<'a>>>::Info,
             > + 'a,
         StockError<S, H, P>,
     > {