diff --git a/Scarb.toml b/Scarb.toml
index 4f0a5b4..c7c6fd9 100644
--- a/Scarb.toml
+++ b/Scarb.toml
@@ -15,7 +15,9 @@ cairo_test = "2.7.0"
 SimpleStruct = "npx ts-node scripts/v0/SimpleStruct.ts"
 SimpleStructV1 = "npx ts-node scripts/v1/SimpleStruct.ts"
 StructWithArray = "npx ts-node scripts/v0/StructWithArray.ts"
+StructWithArrayV1 = "npx ts-node scripts/v1/StructWithArray.ts"
 StructWithMerkletree = "npx ts-node scripts/v0/StructWithMerkletree.ts"
+StructWithMerkletreeV1 = "npx ts-node scripts/v1/StructWithMerkletree.ts"
 StructWithU256 = "npx ts-node scripts/v0/StructWithU256.ts"
 StructWithU256V1 = "npx ts-node scripts/v1/StructWithU256.ts"
 format = "scarb fmt && npx prettier --write ."
diff --git a/src/examples/v1/struct_with_array.cairo b/src/examples/v1/struct_with_array.cairo
index 76f7fba..92038c3 100644
--- a/src/examples/v1/struct_with_array.cairo
+++ b/src/examples/v1/struct_with_array.cairo
@@ -5,7 +5,7 @@ use hash::{LegacyHash, HashStateTrait, HashStateExTrait};
 use off_chain_signature::interfaces::{IOffChainMessageHash, IStructHash, v1::StarknetDomain};
 
 const STRUCT_WITH_ARRAY_TYPE_HASH: felt252 =
-    selector!("StructWithArray(some_felt252:felt,some_array:felt*)");
+    selector!("\"StructWithArray\"(\"some_felt252\":\"felt\",\"some_array\":\"felt*\")");
 
 #[derive(Drop, Copy)]
 struct StructWithArray {
@@ -41,9 +41,11 @@ impl StructHashStructWithArray of IStructHash<StructWithArray> {
 
 impl StructHashSpanFelt252 of IStructHash<Span<felt252>> {
     fn get_struct_hash(self: @Span<felt252>) -> felt252 {
-        let mut call_data_state = LegacyHash::hash(0, *self);
-        call_data_state = LegacyHash::hash(call_data_state, (*self).len());
-        call_data_state
+        let mut state = PoseidonTrait::new();
+        for el in (*self) {
+            state = state.update_with(*el);
+        };
+        state.finalize()
     }
 }
 
@@ -65,7 +67,7 @@ mod tests {
     #[test]
     fn test_valid_hash() {
         // This value was computed using StarknetJS
-        let message_hash = 0x266b2350f2febce38581c6aa5b1afb829bb1466840400305fe51548ba32544e;
+        let message_hash = 0x723b50f650b3b037620c51955e482aeb7786fadeb0d7a384ef99278102f038f;
         let mut some_array = ArrayTrait::new();
         some_array.append(4);
         some_array.append(2);
diff --git a/src/examples/v1/struct_with_merkletree.cairo b/src/examples/v1/struct_with_merkletree.cairo
index 7f2cdc5..8612da3 100644
--- a/src/examples/v1/struct_with_merkletree.cairo
+++ b/src/examples/v1/struct_with_merkletree.cairo
@@ -44,7 +44,7 @@ mod tests {
     #[test]
     fn test_valid_hash() {
         // This value was computed using StarknetJS
-        let message_hash = 0x4e4aa6e92e1250e5277a99686aa17c411b28b83fc948df78c10f848f1b0ad30;
+        let message_hash = 0x2a89d9f00b3ead36ea204b956bc9ac862a5e7e0f2ad2bf790322dda9690629e;
         let simple_struct = StructWithMerkletree {
             some_felt252: 712,
             some_merkletree_root: 0x1e3fb24d6eeb2fdf4308dd358adfb0169dcdb21b3c6bac8ca223a9af6a2bbd9