diff --git a/belt-mac/src/lib.rs b/belt-mac/src/lib.rs
index 18687fe..90f909b 100644
--- a/belt-mac/src/lib.rs
+++ b/belt-mac/src/lib.rs
@@ -98,11 +98,11 @@ where
             blocks: &'a [Block<Self>],
         }
 
-        impl<'a, N: BlockSizes> BlockSizeUser for Closure<'a, N> {
+        impl<N: BlockSizes> BlockSizeUser for Closure<'_, N> {
             type BlockSize = N;
         }
 
-        impl<'a, N: BlockSizes> BlockCipherEncClosure for Closure<'a, N> {
+        impl<N: BlockSizes> BlockCipherEncClosure for Closure<'_, N> {
             #[inline(always)]
             fn call<B: BlockCipherEncBackend<BlockSize = Self::BlockSize>>(self, backend: &B) {
                 for block in self.blocks {
diff --git a/cbc-mac/src/lib.rs b/cbc-mac/src/lib.rs
index f9cd2b5..9fc5b12 100644
--- a/cbc-mac/src/lib.rs
+++ b/cbc-mac/src/lib.rs
@@ -119,11 +119,11 @@ where
             blocks: &'a [Block<Self>],
         }
 
-        impl<'a, N: BlockSizes> BlockSizeUser for Closure<'a, N> {
+        impl<N: BlockSizes> BlockSizeUser for Closure<'_, N> {
             type BlockSize = N;
         }
 
-        impl<'a, N: BlockSizes> BlockCipherEncClosure for Closure<'a, N> {
+        impl<N: BlockSizes> BlockCipherEncClosure for Closure<'_, N> {
             #[inline(always)]
             fn call<B: BlockCipherEncBackend<BlockSize = Self::BlockSize>>(self, backend: &B) {
                 for block in self.blocks {
diff --git a/cmac/src/lib.rs b/cmac/src/lib.rs
index 5b8e021..8edc126 100644
--- a/cmac/src/lib.rs
+++ b/cmac/src/lib.rs
@@ -147,11 +147,11 @@ where
             blocks: &'a [Block<Self>],
         }
 
-        impl<'a, N: BlockSizes> BlockSizeUser for Closure<'a, N> {
+        impl<N: BlockSizes> BlockSizeUser for Closure<'_, N> {
             type BlockSize = N;
         }
 
-        impl<'a, N: BlockSizes> BlockCipherEncClosure for Closure<'a, N> {
+        impl<N: BlockSizes> BlockCipherEncClosure for Closure<'_, N> {
             #[inline(always)]
             fn call<B: BlockCipherEncBackend<BlockSize = Self::BlockSize>>(self, backend: &B) {
                 for block in self.blocks {
diff --git a/pmac/src/lib.rs b/pmac/src/lib.rs
index b3e7b8b..050a746 100644
--- a/pmac/src/lib.rs
+++ b/pmac/src/lib.rs
@@ -273,7 +273,7 @@ where
             blocks: &'a [Block<Self>],
         }
 
-        impl<'a, N, const LC_SIZE: usize> BlockSizeUser for Closure<'a, N, LC_SIZE>
+        impl<N, const LC_SIZE: usize> BlockSizeUser for Closure<'_, N, LC_SIZE>
         where
             N: BlockSizes,
             Array<u8, N>: Dbl,
@@ -281,7 +281,7 @@ where
             type BlockSize = N;
         }
 
-        impl<'a, N, const LC_SIZE: usize> BlockCipherEncClosure for Closure<'a, N, LC_SIZE>
+        impl<N, const LC_SIZE: usize> BlockCipherEncClosure for Closure<'_, N, LC_SIZE>
         where
             N: BlockSizes,
             Array<u8, N>: Dbl,
diff --git a/retail-mac/src/lib.rs b/retail-mac/src/lib.rs
index 0958008..5f9689b 100644
--- a/retail-mac/src/lib.rs
+++ b/retail-mac/src/lib.rs
@@ -144,11 +144,11 @@ where
             blocks: &'a [Block<Self>],
         }
 
-        impl<'a, N: BlockSizes> BlockSizeUser for Closure<'a, N> {
+        impl<N: BlockSizes> BlockSizeUser for Closure<'_, N> {
             type BlockSize = N;
         }
 
-        impl<'a, N: BlockSizes> BlockCipherEncClosure for Closure<'a, N> {
+        impl<N: BlockSizes> BlockCipherEncClosure for Closure<'_, N> {
             #[inline(always)]
             fn call<B: BlockCipherEncBackend<BlockSize = Self::BlockSize>>(self, backend: &B) {
                 for block in self.blocks {