diff --git a/.gitignore b/.gitignore
index 5d3779bc..e60238dc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 node_modules
 .env
+.idea
 coverage
 coverage.json
 typechain
diff --git a/contracts/token/erc721/abstract/ERC721Hybrid.sol b/contracts/token/erc721/abstract/ERC721Hybrid.sol
index 5580030a..d24cbe49 100644
--- a/contracts/token/erc721/abstract/ERC721Hybrid.sol
+++ b/contracts/token/erc721/abstract/ERC721Hybrid.sol
@@ -3,7 +3,7 @@
 pragma solidity 0.8.19;
 
 import {ERC721} from "@openzeppelin/contracts/token/ERC721/ERC721.sol";
-import {BitMaps} from "@openzeppelin/contracts/utils/structs/BitMaps.sol";
+import {BitMaps} from "solidity-bits/contracts/BitMaps.sol";
 import {ERC721Psi, ERC721PsiBurnable} from "../erc721psi/ERC721PsiBurnable.sol";
 // Errors
 import {IImmutableERC721Errors} from "../../../errors/Errors.sol";
diff --git a/contracts/token/erc721/abstract/ImmutableERC721Base.sol b/contracts/token/erc721/abstract/ImmutableERC721Base.sol
index da41a13f..5947f100 100644
--- a/contracts/token/erc721/abstract/ImmutableERC721Base.sol
+++ b/contracts/token/erc721/abstract/ImmutableERC721Base.sol
@@ -10,7 +10,7 @@ import {ERC2981} from "@openzeppelin/contracts/token/common/ERC2981.sol";
 import {OperatorAllowlistEnforced} from "../../../allowlist/OperatorAllowlistEnforced.sol";
 
 // Utils
-import {BitMaps} from "@openzeppelin/contracts/utils/structs/BitMaps.sol";
+import {BitMaps} from "solidity-bits/contracts/BitMaps.sol";
 import {AccessControlEnumerable, MintingAccessControl} from "../../../access/MintingAccessControl.sol";
 
 /*