diff --git a/crates/committer/src/felt.rs b/crates/committer/src/felt.rs
index 6d08274e..25665e06 100644
--- a/crates/committer/src/felt.rs
+++ b/crates/committer/src/felt.rs
@@ -80,8 +80,4 @@ impl Felt {
     pub(crate) fn from_hex(hex_string: &str) -> Result<Self, FromStrError> {
         Ok(StarknetTypesFelt::from_hex(hex_string)?.into())
     }
-
-    pub fn as_bytes(&self) -> [u8; 32] {
-        self.0.to_bytes_be()
-    }
 }
diff --git a/crates/committer/src/patricia_merkle_tree/filled_tree/node_serde.rs b/crates/committer/src/patricia_merkle_tree/filled_tree/node_serde.rs
index 308eb673..ddb09de8 100644
--- a/crates/committer/src/patricia_merkle_tree/filled_tree/node_serde.rs
+++ b/crates/committer/src/patricia_merkle_tree/filled_tree/node_serde.rs
@@ -32,7 +32,7 @@ type FilledNodeDeserializationResult = Result<FilledNode<LeafDataImpl>, Deserial
 
 impl FilledNode<LeafDataImpl> {
     pub(crate) fn suffix(&self) -> [u8; SERIALIZE_HASH_BYTES] {
-        self.hash.0.as_bytes()
+        self.hash.0.to_bytes_be()
     }
 }
 
@@ -48,8 +48,8 @@ impl Serializable for FilledNode<LeafDataImpl> {
                 right_hash,
             }) => {
                 // Serialize left and right hashes to byte arrays.
-                let left: [u8; SERIALIZE_HASH_BYTES] = left_hash.0.as_bytes();
-                let right: [u8; SERIALIZE_HASH_BYTES] = right_hash.0.as_bytes();
+                let left: [u8; SERIALIZE_HASH_BYTES] = left_hash.0.to_bytes_be();
+                let right: [u8; SERIALIZE_HASH_BYTES] = right_hash.0.to_bytes_be();
 
                 // Concatenate left and right hashes.
                 let serialized = [left, right].concat();
@@ -61,8 +61,8 @@ impl Serializable for FilledNode<LeafDataImpl> {
                 path_to_bottom,
             }) => {
                 // Serialize bottom hash, path, and path length to byte arrays.
-                let bottom: [u8; SERIALIZE_HASH_BYTES] = bottom_hash.0.as_bytes();
-                let path: [u8; SERIALIZE_HASH_BYTES] = path_to_bottom.path.0.as_bytes();
+                let bottom: [u8; SERIALIZE_HASH_BYTES] = bottom_hash.0.to_bytes_be();
+                let path: [u8; SERIALIZE_HASH_BYTES] = path_to_bottom.path.0.to_bytes_be();
                 let length: [u8; 1] = path_to_bottom.length.0.to_be_bytes();
 
                 // Concatenate bottom hash, path, and path length.
diff --git a/crates/committer/src/patricia_merkle_tree/node_data/leaf_serde.rs b/crates/committer/src/patricia_merkle_tree/node_data/leaf_serde.rs
index 6da50002..2d2cecba 100644
--- a/crates/committer/src/patricia_merkle_tree/node_data/leaf_serde.rs
+++ b/crates/committer/src/patricia_merkle_tree/node_data/leaf_serde.rs
@@ -20,7 +20,7 @@ impl LeafDataImpl {
     ///   describing the leaf and cast it into a byte vector.
     pub(crate) fn serialize(&self) -> Result<StorageValue, SerializationError> {
         match &self {
-            LeafDataImpl::StorageValue(value) => Ok(StorageValue(value.as_bytes().to_vec())),
+            LeafDataImpl::StorageValue(value) => Ok(StorageValue(value.to_bytes_be().to_vec())),
 
             LeafDataImpl::CompiledClassHash(class_hash) => {
                 // Create a temporary object to serialize the leaf into a JSON.
diff --git a/crates/committer/src/patricia_merkle_tree/original_skeleton_tree/create_tree.rs b/crates/committer/src/patricia_merkle_tree/original_skeleton_tree/create_tree.rs
index a751d3f5..b931b20b 100644
--- a/crates/committer/src/patricia_merkle_tree/original_skeleton_tree/create_tree.rs
+++ b/crates/committer/src/patricia_merkle_tree/original_skeleton_tree/create_tree.rs
@@ -197,7 +197,7 @@ impl OriginalSkeletonTreeImpl {
                 });
                 continue;
             }
-            let key = create_db_key(StoragePrefix::InnerNode, &subtree.root_hash.0.as_bytes());
+            let key = create_db_key(StoragePrefix::InnerNode, &subtree.root_hash.0.to_bytes_be());
             let val = storage.get(&key).ok_or(StorageError::MissingKey(key))?;
             subtrees_roots.push(FilledNode::deserialize(
                 &StorageKey::from(subtree.root_hash.0),
diff --git a/crates/committer_cli/src/tests/python_tests.rs b/crates/committer_cli/src/tests/python_tests.rs
index 2fc24f39..ac8b0893 100644
--- a/crates/committer_cli/src/tests/python_tests.rs
+++ b/crates/committer_cli/src/tests/python_tests.rs
@@ -112,7 +112,7 @@ pub(crate) fn example_test(test_args: HashMap<String, String>) -> String {
 
 /// Serializes a Felt into a string.
 pub(crate) fn felt_serialize_test(felt: u128) -> String {
-    let bytes = Felt::from(felt).as_bytes().to_vec();
+    let bytes = Felt::from(felt).to_bytes_be().to_vec();
     serde_json::to_string(&bytes)
         .unwrap_or_else(|error| panic!("Failed to serialize felt: {}", error))
 }
@@ -430,8 +430,8 @@ pub(crate) fn storage_serialize_test() -> Result<String, PythonTestError> {
         storage: HashMap::new(),
     };
     for i in 0..=99_u128 {
-        let key = StorageKey(Felt::from(i).as_bytes().to_vec());
-        let value = StorageValue(Felt::from(i).as_bytes().to_vec());
+        let key = StorageKey(Felt::from(i).to_bytes_be().to_vec());
+        let value = StorageValue(Felt::from(i).to_bytes_be().to_vec());
         storage.set(key, value);
     }