diff --git a/.github/workflows/test-suite.yml b/.github/workflows/test-suite.yml
index fa7e154..a83755b 100644
--- a/.github/workflows/test-suite.yml
+++ b/.github/workflows/test-suite.yml
@@ -43,6 +43,7 @@ jobs:
     - name: Check code coverage with cargo-tarpaulin
       run: cargo-tarpaulin --workspace --all-features --out xml
     - name: Upload to codecov.io
-      uses: codecov/codecov-action@v2
+      uses: codecov/codecov-action@v4
       with:
         fail_ci_if_error: true
+        token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/Cargo.toml b/Cargo.toml
index 7e29c59..f96bebc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ keywords = ["ethereum"]
 categories = ["cryptography::cryptocurrencies"]
 
 [dependencies]
-tree_hash = { git = "https://github.com/KolbyML/tree_hash.git", rev = "8aaf8bb4184148768d48e2cfbbdd0b95d1da8730" }
+tree_hash = { git = "https://github.com/eserilev/tree_hash", branch = "alloy-deps"}
 ethereum_serde_utils = "0.5"
 ethereum_ssz = "0.5"
 serde = "1.0.0"
@@ -24,4 +24,4 @@ itertools = "0.10.0"
 
 [dev-dependencies]
 serde_json = "1.0.0"
-tree_hash_derive = { git = "https://github.com/KolbyML/tree_hash.git", rev = "8aaf8bb4184148768d48e2cfbbdd0b95d1da8730" }
+tree_hash_derive = { git = "https://github.com/eserilev/tree_hash", branch = "alloy-deps"}
diff --git a/src/bitfield.rs b/src/bitfield.rs
index d090833..dedaf7a 100644
--- a/src/bitfield.rs
+++ b/src/bitfield.rs
@@ -240,6 +240,24 @@ impl<N: Unsigned + Clone> Bitfield<Variable<N>> {
     pub fn is_subset(&self, other: &Self) -> bool {
         self.difference(other).is_zero()
     }
+
+    /// Returns a new BitList of length M, with the same bits set as `self`.
+    pub fn resize<M: Unsigned + Clone>(&self) -> Result<Bitfield<Variable<M>>, Error> {
+        if N::to_usize() > M::to_usize() {
+            return Err(Error::InvalidByteCount {
+                given: M::to_usize(),
+                expected: N::to_usize() + 1,
+            });
+        }
+
+        let mut resized = Bitfield::<Variable<M>>::with_capacity(M::to_usize())?;
+
+        for (i, bit) in self.iter().enumerate() {
+            resized.set(i, bit)?;
+        }
+
+        Ok(resized)
+    }
 }
 
 impl<N: Unsigned + Clone> Bitfield<Fixed<N>> {
@@ -1403,4 +1421,21 @@ mod bitlist {
     fn size_of() {
         assert_eq!(std::mem::size_of::<BitList1024>(), SMALLVEC_LEN + 24);
     }
+
+    #[test]
+    fn resize() {
+        let mut bit_list = BitList1::with_capacity(1).unwrap();
+        bit_list.set(0, true).unwrap();
+        assert_eq!(bit_list.len(), 1);
+        assert_eq!(bit_list.num_set_bits(), 1);
+        assert_eq!(bit_list.highest_set_bit().unwrap(), 0);
+
+        let resized_bit_list = bit_list.resize::<typenum::U1024>().unwrap();
+        assert_eq!(resized_bit_list.len(), 1024);
+        assert_eq!(resized_bit_list.num_set_bits(), 1);
+        assert_eq!(resized_bit_list.highest_set_bit().unwrap(), 0);
+
+        // Can't extend a BitList to a smaller BitList
+        resized_bit_list.resize::<typenum::U16>().unwrap_err();
+    }
 }
diff --git a/src/fixed_vector.rs b/src/fixed_vector.rs
index 78dd309..939fbd8 100644
--- a/src/fixed_vector.rs
+++ b/src/fixed_vector.rs
@@ -46,7 +46,7 @@ pub use typenum;
 /// assert_eq!(&long[..], &[1, 2, 3, 4, 0]);
 /// ```
 #[derive(Debug, Clone, Serialize, Deserialize, Derivative)]
-#[derivative(PartialEq, Hash(bound = "T: std::hash::Hash"))]
+#[derivative(PartialEq, Eq, Hash(bound = "T: std::hash::Hash"))]
 #[serde(transparent)]
 pub struct FixedVector<T, N> {
     vec: Vec<T>,