diff --git a/packages/contracts/tests/PollFactory.test.ts b/packages/contracts/tests/PollFactory.test.ts
index 50a0b12ea8..258325a79b 100644
--- a/packages/contracts/tests/PollFactory.test.ts
+++ b/packages/contracts/tests/PollFactory.test.ts
@@ -18,7 +18,7 @@ describe("pollFactory", () => {
 
   before(async () => {
     signer = await getDefaultSigner();
-    pollFactory = (await deployPollFactory(signer, true)) as BaseContract as PollFactory;
+    pollFactory = (await deployPollFactory(signer, undefined, true)) as BaseContract as PollFactory;
   });
 
   describe("deployment", () => {
diff --git a/packages/contracts/ts/deploy.ts b/packages/contracts/ts/deploy.ts
index 13e1fcd946..11316e3654 100644
--- a/packages/contracts/ts/deploy.ts
+++ b/packages/contracts/ts/deploy.ts
@@ -236,7 +236,11 @@ export const deployContractWithLinkedLibraries = async <T extends BaseContract>(
  * @param quiet - whether to suppress console output
  * @returns the deployed Poll Factory contract
  */
-export const deployPollFactory = async (signer: Signer, quiet = false): Promise<PollFactory> => {
+export const deployPollFactory = async (
+  signer: Signer,
+  factory: typeof PollFactoryFactory | undefined,
+  quiet = false,
+): Promise<PollFactory> => {
   const poseidonContracts = await deployPoseidonContracts(signer, {}, quiet);
   const [poseidonT3Contract, poseidonT4Contract, poseidonT5Contract, poseidonT6Contract] = await Promise.all([
     poseidonContracts.PoseidonT3Contract.getAddress(),
@@ -245,9 +249,11 @@ export const deployPollFactory = async (signer: Signer, quiet = false): Promise<
     poseidonContracts.PoseidonT6Contract.getAddress(),
   ]);
 
+  const pollFactory = factory || PollFactoryFactory;
+
   const contractFactory = await createContractFactory(
-    PollFactoryFactory.abi,
-    PollFactoryFactory.linkBytecode({
+    pollFactory.abi,
+    pollFactory.linkBytecode({
       "contracts/crypto/PoseidonT3.sol:PoseidonT3": poseidonT3Contract,
       "contracts/crypto/PoseidonT4.sol:PoseidonT4": poseidonT4Contract,
       "contracts/crypto/PoseidonT5.sol:PoseidonT5": poseidonT5Contract,
@@ -270,6 +276,7 @@ export const deployMaci = async ({
   signer,
   poseidonAddresses,
   stateTreeDepth = 10,
+  factories,
   quiet = true,
 }: IDeployMaciArgs): Promise<IDeployedMaci> => {
   const emptyBallotRoots = genEmptyBallotRoots(stateTreeDepth);
@@ -289,7 +296,12 @@ export const deployMaci = async ({
     poseidonT6,
   }));
 
-  const contractsToLink = [MACIFactory, PollFactoryFactory, MessageProcessorFactoryFactory, TallyFactoryFactory];
+  const contractsToLink = factories || [
+    MACIFactory,
+    PollFactoryFactory,
+    MessageProcessorFactoryFactory,
+    TallyFactoryFactory,
+  ];
 
   // Link Poseidon contracts to MACI
   const linkedContractFactories = await Promise.all(
diff --git a/packages/contracts/ts/types.ts b/packages/contracts/ts/types.ts
index 3aa2c72f49..996bca35a0 100644
--- a/packages/contracts/ts/types.ts
+++ b/packages/contracts/ts/types.ts
@@ -2,12 +2,16 @@ import type {
   ConstantInitialVoiceCreditProxy,
   FreeForAllGatekeeper,
   MACI,
+  MACI__factory as MACIFactory,
+  MessageProcessorFactory__factory as MessageProcessorFactoryFactory,
   MockVerifier,
   PollFactory,
+  PollFactory__factory as PollFactoryFactory,
   PoseidonT3,
   PoseidonT4,
   PoseidonT5,
   PoseidonT6,
+  TallyFactory__factory as TallyFactoryFactory,
   VkRegistry,
 } from "../typechain-types";
 import type { BigNumberish, Signer } from "ethers";
@@ -144,6 +148,16 @@ export interface IDeployMaciArgs {
     poseidonT6: string;
   }>;
 
+  /**
+   * Custom user defined factories
+   */
+  factories?: [
+    typeof MACIFactory,
+    typeof PollFactoryFactory,
+    typeof MessageProcessorFactoryFactory,
+    typeof TallyFactoryFactory,
+  ];
+
   /**
    * The depth of the state tree
    */