diff --git a/src/WorldIDIdentityManagerImplV2.sol b/src/WorldIDIdentityManagerImplV2.sol
index da452bc..dd4bcf4 100644
--- a/src/WorldIDIdentityManagerImplV2.sol
+++ b/src/WorldIDIdentityManagerImplV2.sol
@@ -99,7 +99,7 @@ contract WorldIDIdentityManagerImplV2 is WorldIDIdentityManagerImplV1 {
     function deleteIdentities(
         uint256[8] calldata deletionProof,
         uint32 batchSize,
-        uint256[] calldata packedDeletionIndices,
+        bytes calldata packedDeletionIndices,
         uint256 preRoot,
         uint256 postRoot
     ) public virtual onlyProxy onlyInitialized onlyIdentityOperator {
@@ -213,12 +213,15 @@ contract WorldIDIdentityManagerImplV2 is WorldIDIdentityManagerImplV1 {
     ///
     /// @return hash The input hash calculated as described below.
     ///
+    /// @dev the deletion indices are packed into a uint256[] array where each element of the array
+    /// packs 8 different uint32 indices,
+    ///
     /// We keccak hash all input to save verification gas. Inputs are arranged as follows:
     ///
     /// deletionIndices[0] || deletionIndices[1] || ... || deletionIndices[batchSize-1] || PreRoot || PostRoot
     ///        32          ||        32          || ... ||              32              ||   256   ||    256
     function calculateIdentityDeletionInputHash(
-        uint256[] calldata packedDeletionIndices,
+        bytes calldata packedDeletionIndices,
         uint256 preRoot,
         uint256 postRoot,
         uint32 batchSize
diff --git a/src/test/identity-manager/WorldIDIdentityManagerIdentityDeletion.t.sol b/src/test/identity-manager/WorldIDIdentityManagerIdentityDeletion.t.sol
index a8985b2..c916f13 100644
--- a/src/test/identity-manager/WorldIDIdentityManagerIdentityDeletion.t.sol
+++ b/src/test/identity-manager/WorldIDIdentityManagerIdentityDeletion.t.sol
@@ -13,6 +13,8 @@ import {WorldIDIdentityManager as IdentityManager} from "../../WorldIDIdentityMa
 import {WorldIDIdentityManagerImplV2 as ManagerImpl} from "../../WorldIDIdentityManagerImplV2.sol";
 import {WorldIDIdentityManagerImplV1 as ManagerImplV1} from "../../WorldIDIdentityManagerImplV1.sol";
 
+import {console} from "forge-std/console.sol";
+
 /// @title World ID Identity Manager Identity Deletion Tests
 /// @notice Contains tests for the WorldID identity manager.
 /// @author Worldcoin
@@ -76,7 +78,7 @@ contract WorldIDIdentityManagerIdentityDeletion is WorldIDIdentityManagerTest {
     function testDeleteIdentitiesWithCorrectInputs(
         uint128[8] memory prf,
         uint128 newPreRoot,
-        uint256[] memory packedDeletionIndices,
+        bytes calldata packedDeletionIndices,
         uint128 newPostRoot,
         address identityOperator
     ) public {
@@ -129,15 +131,16 @@ contract WorldIDIdentityManagerIdentityDeletion is WorldIDIdentityManagerTest {
     function testDeleteIdentitiesSelectsCorrectVerifier(
         uint128[8] memory prf,
         uint128 newPreRoot,
-        uint256[] memory packedDeletionIndices,
+        bytes calldata packedDeletionIndices,
         uint128 newPostRoot
     ) public {
         vm.assume(SimpleVerify.isValidInput(uint256(prf[0])));
         vm.assume(newPreRoot != newPostRoot);
-        vm.assume(packedDeletionIndices.length <= 125 && packedDeletionIndices.length > 0);
-        uint256 secondIndicesArrayLength = 1;
-        // Half of the first batch of 8
-        uint32 secondIndicesLength = uint32(4);
+        vm.assume(packedDeletionIndices.length <= 1000 && packedDeletionIndices.length > 0);
+       
+        bytes memory secondIndices = abi.encodePacked(uint32(0), uint32(2), uint32(4), uint32(6));
+        uint32 secondIndicesLength = uint32(secondIndices.length);
+
         (
             VerifierLookupTable insertVerifiers,
             VerifierLookupTable deletionVerifiers,
@@ -152,10 +155,6 @@ contract WorldIDIdentityManagerIdentityDeletion is WorldIDIdentityManagerTest {
             semaphoreVerifier
         );
         uint256[8] memory actualProof = prepareDeleteIdentitiesTestCase(prf);
-        uint256[] memory secondIndices = new uint256[](secondIndicesArrayLength);
-        for (uint256 i = 0; i < secondIndicesArrayLength; ++i) {
-            secondIndices[i] = packedDeletionIndices[i];
-        }
         bytes memory firstCallData = abi.encodeCall(
             ManagerImpl.deleteIdentities,
             (actualProof, deletionBatchSize, packedDeletionIndices, newPreRoot, newPostRoot)
@@ -182,7 +181,7 @@ contract WorldIDIdentityManagerIdentityDeletion is WorldIDIdentityManagerTest {
     function testCannotDeleteIdentitiesWithInvalidBatchSize(
         uint128[8] memory prf,
         uint128 newPreRoot,
-        uint256[] memory packedDeletionIndices,
+        bytes calldata packedDeletionIndices,
         uint128 newPostRoot
     ) public {
         vm.assume(SimpleVerify.isValidInput(uint256(prf[0])));
@@ -217,13 +216,13 @@ contract WorldIDIdentityManagerIdentityDeletion is WorldIDIdentityManagerTest {
     function testCannotDeleteIdentitiesWithIncorrectInputs(
         uint128[8] memory prf,
         uint128 newPreRoot,
-        uint256[] memory packedDeletionIndices,
+        bytes calldata packedDeletionIndices,
         uint128 newPostRoot
     ) public {
         // Setup
         vm.assume(!SimpleVerify.isValidInput(uint256(prf[0])));
         vm.assume(newPreRoot != newPostRoot);
-        vm.assume(packedDeletionIndices.length <= 125);
+        vm.assume(packedDeletionIndices.length <= 1000);
         uint32 indicesLength = uint32(packedDeletionIndices.length * 8);
 
         (
diff --git a/src/test/identity-manager/WorldIDIdentityManagerTest.sol b/src/test/identity-manager/WorldIDIdentityManagerTest.sol
index 9a5dc39..0a47834 100644
--- a/src/test/identity-manager/WorldIDIdentityManagerTest.sol
+++ b/src/test/identity-manager/WorldIDIdentityManagerTest.sol
@@ -75,7 +75,7 @@ contract WorldIDIdentityManagerTest is WorldIDTest {
         0x18cb13df3e79b9f847a1494d0a2e6f3cc0041d9cae7e5ccb8cd1852ecdc4af58;
     uint256 internal constant deletionPostRoot =
         0x82fcf94594d7363636338e2c29242cc77e3d04f36c8ad64d294d2ab4d251708;
-    uint256[] packedDeletionIndices = [0x20000000400000006000000080000000a0000000c0000000e];
+    bytes packedDeletionIndices = abi.encodePacked(uint32(0), uint32(2), uint32(4), uint32(6),uint32(8),uint32(10),uint32(12),uint32(14));
     uint32 deletionBatchSize = 8;
     uint256[8] deletionProof;