diff --git a/crates/primitives/src/traits/block/body.rs b/crates/primitives/src/traits/block/body.rs
index 91e836e8ecdd..ff8f71b76162 100644
--- a/crates/primitives/src/traits/block/body.rs
+++ b/crates/primitives/src/traits/block/body.rs
@@ -31,6 +31,7 @@ pub trait BlockBody:
     fn transactions(&self) -> &[Self::SignedTransaction];
 
     /// Returns [`Withdrawals`] in the block, if any.
+    // todo: branch out into extension trait
     fn withdrawals(&self) -> Option<&Withdrawals>;
 
     /// Returns reference to uncle block headers.
@@ -94,9 +95,6 @@ pub trait BlockBody:
     }
 
     /// Calculates a heuristic for the in-memory size of the [`BlockBody`].
-    // todo: default impl when alloy prs merged
-    // <https://github.com/alloy-rs/alloy/pull/1414>
-    // <https://github.com/alloy-rs/alloy/pull/1415>
     fn size(&self) -> usize;
 }
 
diff --git a/crates/primitives/src/traits/block/mod.rs b/crates/primitives/src/traits/block/mod.rs
index 3ae42cee7d53..451a54c3457c 100644
--- a/crates/primitives/src/traits/block/mod.rs
+++ b/crates/primitives/src/traits/block/mod.rs
@@ -24,7 +24,7 @@ pub trait Block:
 {
     /// Header part of the block.
     type Header: BlockHeader + Sealable;
-    
+
     /// The block's body contains the transactions in the block.
     type Body: BlockBody;
 
@@ -101,8 +101,6 @@ pub trait Block:
     }
 
     /// Calculates a heuristic for the in-memory size of the [`Block`].
-    // todo: default impl when alloy prs merged
-    // <https://github.com/alloy-rs/alloy/pull/1414>
     fn size(&self) -> usize;
 }