diff --git a/Cargo.toml b/Cargo.toml
index a46c7a5..ee3e88a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "starling"
-version = "3.1.2"
+version = "3.1.3"
 authors = ["Josiah Evans <koreanhalo@gmail.com>"]
 description = "This tree structure is a binary merkle tree with branch compression via split indexes."
 repository = "https://github.com/ChosunOne/merkle_bit"
@@ -24,26 +24,26 @@ lto = true
 debug = true
 
 [dev-dependencies]
-criterion = "0.3.0"
-rand = "0.7.2"
+criterion = "0.3.1"
+rand = "0.7.3"
 
 [dependencies]
-bincode = { version = "1.1.4", optional = true }
+bincode = { version = "1.2.1", optional = true }
 blake2-rfc = { version = "0.2.18", optional = true }
-serde = { version = "1.0.101", features = ["derive"], optional = true }
-serde_json = { version = "1.0.40", optional = true }
-serde_cbor = { version = "0.10.1", optional = true }
-serde_yaml = { version = "0.8.9", optional = true }
+serde = { version = "1.0.104", features = ["derive"], optional = true }
+serde_json = { version = "1.0.45", optional = true }
+serde_cbor = { version = "0.11.1", optional = true }
+serde_yaml = { version = "0.8.11", optional = true }
 serde-pickle = { version = "0.6.0", optional = true }
 ron = { version = "0.5.1", optional = true }
 groestl = { version = "0.8.0", optional = true }
-openssl = { version = "0.10.24", optional = true }
+openssl = { version = "0.10.26", optional = true }
 tiny-keccak = { version = "2.0.1", optional = true, features = ["sha3", "keccak"] }
-hashbrown = { version = "0.6.0", optional = true }
+hashbrown = { version = "0.6.3", optional = true }
 rocksdb = { version = "0.13.0", optional = true }
-seahash = { version = "3.0.6", optional = true }
+seahash = { version = "3.0.7", optional = true }
 fxhash = { version = "0.2.1", optional = true }
-rand = { version = "0.7.2", optional = true }
+rand = { version = "0.7.3", optional = true }
 digest = { version = "0.8.1", optional = true }
 blake2 = { version = "0.8.1", optional = true }
 md2 = { version = "0.8.0", optional = true }
@@ -51,8 +51,8 @@ md4 = { version = "0.8.0", optional = true }
 md-5 = { version = "0.8.0", optional = true }
 ripemd160 = { version = "0.8.0", optional = true }
 ripemd320 = { version = "0.8.0", optional = true }
-sha-1 = { version = "0.8.1", optional = true }
-sha2 = { version = "0.8.0", optional = true }
+sha-1 = { version = "0.8.2", optional = true }
+sha2 = { version = "0.8.1", optional = true }
 sha3 = { version = "0.8.2", optional = true }
 whirlpool = { version = "0.8.1", optional = true }
 
diff --git a/src/utils/tree_utils.rs b/src/utils/tree_utils.rs
index e35ff5e..0a3f24e 100644
--- a/src/utils/tree_utils.rs
+++ b/src/utils/tree_utils.rs
@@ -171,7 +171,7 @@ pub const fn fast_log_2(num: u8) -> u8 {
 pub fn generate_tree_ref_queue<ArrayType: Array>(
     tree_refs: &mut Vec<TreeRef<ArrayType>>,
     tree_ref_queue: &mut HashMap<usize, Vec<(usize, usize, usize)>>,
-) -> BinaryMerkleTreeResult<(HashSet<usize>)> {
+) -> BinaryMerkleTreeResult<HashSet<usize>> {
     let mut unique_split_bits = HashSet::new();
     for i in 0..tree_refs.len() - 1 {
         let left_key = tree_refs[i].key.as_ref();