diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index fb27638d..bc853527 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -33,13 +33,17 @@ jobs:
       - name: Install yarn dependencies
         run: yarn install --no-progress --non-interactive
 
-      - name: Set up python
+      - name: Set up Python 3.7
         uses: actions/setup-python@v2
         with:
           python-version: 3.7
 
-      - name: Install python dependencies
-        run: pip install -r requirements.txt
-
-      - name: Run linters
-        run: yarn check-format
+      - name: Install dependencies
+        run: |
+          sudo apt install -y libgmp3-dev
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+      
+      - name: Run Linters
+        run: |
+          yarn check-format
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 7e719bd6..98a8d5f0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -29,26 +29,26 @@ jobs:
           key: yarn-${{ hashFiles('**/yarn.lock') }}
           restore-keys: |
             yarn-
-
       - name: Install yarn dependencies
         run: yarn install --no-progress --non-interactive
 
+      - name: Set up Python 3.7
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.7
+
+      - name: Install dependencies
+        run: |
+          sudo apt install -y libgmp3-dev
+          python -m pip install --upgrade pip
+          pip install starknet-devnet
+  
       - name: Compile Contracts
         run: yarn compile
 
       - name: Run unit tests
-        run: yarn test:hardhat
-
-      - name: Setup Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: "3.7"
-
-      - name: Install pytest
-        run: python -m pip install --upgrade pytest
-
-      - name: Install cairo lang
-        run: python -m pip install --upgrade cairo-lang>=0.7.1
-
-      - name: Run python unit tests
-        run: yarn test:pytest
+        run: |
+          starknet-devnet -p 5000 &
+          sleep 10 &&
+          curl http://localhost:5000 &&
+          yarn test 
diff --git a/README.md b/README.md
index e53b3685..e1f1151d 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,6 @@ Snapshot is open-sourced software licensed under the © [MIT license](LICENSE).
 
 Usage
 -----
-The Starknet Hardhat plugin uses a docker container so make sure you have a running Docker daemon. More information about the plugin can be found [here](https://github.com/Shard-Labs/starknet-hardhat-plugin)
 
 ### Install Python and Yarn requirements: 
 
@@ -46,6 +45,11 @@ yarn
 ```bash
 yarn compile
 ```
+### Install and start StarkNet Devnet (In separate terminal):
+```bash
+pip install starknet-devnet
+starknet-devnet
+```
 
 ### Run tests:
 ```bash
diff --git a/contracts/starknet/lib/types.cairo b/contracts/starknet/lib/types.cairo
new file mode 100644
index 00000000..546f5dba
--- /dev/null
+++ b/contracts/starknet/lib/types.cairo
@@ -0,0 +1,12 @@
+from starkware.cairo.common.math import assert_nn_le, assert_lt_felt
+
+struct EthAddress:
+    member value : felt
+end
+
+# Checks that input is 160 bits long then if so, casts to the EthAddress type.
+func to_ethereum_address{range_check_ptr}(input : felt) -> (address : EthAddress):
+    assert_lt_felt(input, 2 ** 160)
+    tempvar address : EthAddress = EthAddress(value=input)
+    return (address)
+end
diff --git a/contracts/starknet/README.md b/contracts/starknet/mocks/README.md
similarity index 100%
rename from contracts/starknet/README.md
rename to contracts/starknet/mocks/README.md
diff --git a/contracts/starknet/L1AuthMock.cairo b/contracts/starknet/mocks/l1_auth_mock.cairo
similarity index 100%
rename from contracts/starknet/L1AuthMock.cairo
rename to contracts/starknet/mocks/l1_auth_mock.cairo
diff --git a/contracts/starknet/L2AuthMock.cairo b/contracts/starknet/mocks/l2_auth_mock.cairo
similarity index 100%
rename from contracts/starknet/L2AuthMock.cairo
rename to contracts/starknet/mocks/l2_auth_mock.cairo
diff --git a/contracts/starknet/strategies/vanilla_voting_strategy.cairo b/contracts/starknet/strategies/vanilla_voting_strategy.cairo
new file mode 100644
index 00000000..6a017a9c
--- /dev/null
+++ b/contracts/starknet/strategies/vanilla_voting_strategy.cairo
@@ -0,0 +1,12 @@
+%lang starknet
+
+from starkware.cairo.common.uint256 import Uint256
+from contracts.starknet.lib.types import EthAddress
+
+# Returns a voting power of 1 for every address it is queried with.
+@view
+func get_voting_power{range_check_ptr}(
+        block : felt, address : EthAddress, params_len : felt, params : felt*) -> (
+        voting_power : Uint256):
+    return (Uint256(1, 0))
+end
diff --git a/hardhat.config.ts b/hardhat.config.ts
index 2de91fb3..9c149432 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -52,7 +52,7 @@ const config: HardhatUserConfig = {
       url: 'http://localhost:8545',
     },
     starknetDevnet: {
-      url: 'http://localhost:8000/',
+      url: 'http://localhost:5000/',
     },
   },
   gasReporter: {
@@ -62,14 +62,10 @@ const config: HardhatUserConfig = {
   etherscan: {
     apiKey: process.env.ETHERSCAN_API_KEY,
   },
-  // cairo: {
-  //   venv: "active"
-  //   venv: process.env.VIRTUAL_ENV
-  // },
-  // paths: {
-  //   sources: "contracts/ethereum",
-  //   starknetSources: "contracts/starknet"
-  // }
+  starknet: {
+    venv: 'active',
+    network: 'starknetDevnet',
+  },
 };
 
 export default config;
diff --git a/package.json b/package.json
index 09b45751..8070b487 100644
--- a/package.json
+++ b/package.json
@@ -14,8 +14,8 @@
     "start:l1": "hardhat node",
     "format:l1": "prettier --write 'contracts/**/*.sol'",
     "check-format:l1": "prettier -c 'contracts/**/*.sol'",
-    "format:l2": "cairo-format -i contracts/**/*.cairo",
-    "check-format:l2": "cairo-format -c contracts/**/*.cairo",
+    "format:l2": "cairo-format -c contracts/starknet/**/*.cairo",
+    "check-format:l2": "cairo-format -c contracts/starknet/**/*.cairo",
     "format:ts": "eslint . --ext .ts --fix",
     "check-format:ts": "eslint . --ext .ts",
     "format": "yarn format:l1 && yarn format:l2 && yarn format:ts",
@@ -32,7 +32,7 @@
     "@nomiclabs/hardhat-etherscan": "^2.1.8",
     "@nomiclabs/hardhat-solhint": "^2.0.0",
     "@nomiclabs/hardhat-waffle": "^2.0.2",
-    "@shardlabs/starknet-hardhat-plugin": "^0.3.11",
+    "@shardlabs/starknet-hardhat-plugin": "^0.4.2",
     "@typechain/ethers-v5": "^7.2.0",
     "@typechain/hardhat": "^2.3.1",
     "@types/chai": "^4.3.0",
diff --git a/test/starknet/shared/helpers.ts b/test/starknet/shared/helpers.ts
new file mode 100644
index 00000000..cd0414dc
--- /dev/null
+++ b/test/starknet/shared/helpers.ts
@@ -0,0 +1,19 @@
+export function assert(condition: boolean, message = 'Assertion Failed'): boolean {
+  if (!condition) {
+    throw message;
+  }
+  return condition;
+}
+
+export function hexToBytes(hex: string): number[] {
+  const bytes = [];
+  for (let c = 2; c < hex.length; c += 2) bytes.push(parseInt(hex.substring(c, c + 2), 16));
+  return bytes;
+}
+
+export function bytesToHex(bytes: number[]): string {
+  const body = Array.from(bytes, function (byte) {
+    return ('0' + (byte & 0xff).toString(16)).slice(-2);
+  }).join('');
+  return '0x' + body;
+}
diff --git a/test/starknet/shared/types.ts b/test/starknet/shared/types.ts
new file mode 100644
index 00000000..b7183d81
--- /dev/null
+++ b/test/starknet/shared/types.ts
@@ -0,0 +1,73 @@
+import { assert, hexToBytes, bytesToHex } from './helpers';
+
+//TODO: add toBytes for IntsSequence
+export class IntsSequence {
+  values: bigint[];
+  bytesLength: number;
+
+  constructor(values: bigint[], bytesLength: number) {
+    this.values = values;
+    this.bytesLength = bytesLength;
+  }
+
+  toSplitUint256(): SplitUint256 {
+    const rem = this.bytesLength % 8;
+    let uint = this.values[this.values.length - 1];
+    let shift = BigInt(0);
+    if (rem == 0) {
+      shift += BigInt(64);
+    } else {
+      shift += BigInt(rem * 8);
+    }
+    for (let i = 0; i < this.values.length - 1; i++) {
+      uint += this.values[this.values.length - 2 - i] << BigInt(shift);
+      shift += BigInt(64);
+    }
+    return SplitUint256.fromUint(uint);
+  }
+
+  static fromBytes(bytes: number[]): IntsSequence {
+    const ints_array: bigint[] = [];
+    for (let i = 0; i < bytes.length; i += 8) {
+      ints_array.push(BigInt(bytesToHex(bytes.slice(i + 0, i + 8))));
+    }
+    return new IntsSequence(ints_array, bytes.length);
+  }
+
+  static fromUint(uint: bigint): IntsSequence {
+    let hex = uint.toString(16);
+    if (hex.length % 2 != 0) {
+      hex = '0x0' + hex;
+    } else {
+      hex = '0x' + hex;
+    }
+    return IntsSequence.fromBytes(hexToBytes(hex));
+  }
+}
+
+export class SplitUint256 {
+  low: bigint;
+  high: bigint;
+
+  constructor(low: bigint, high: bigint) {
+    this.low = low;
+    this.high = high;
+  }
+
+  toUint(): bigint {
+    const uint = this.low + (this.high << BigInt(128));
+    return uint;
+  }
+
+  static fromUint(uint: bigint): SplitUint256 {
+    assert(uint < BigInt(1) << BigInt(256), 'Number too large');
+    assert(BigInt(0) <= uint, 'Number cannot be negative');
+    const low = uint & ((BigInt(1) << BigInt(128)) - BigInt(1));
+    const high = uint >> BigInt(128);
+    return new SplitUint256(low, high);
+  }
+
+  toHex(): string {
+    return '0x' + this.toUint().toString(16);
+  }
+}
diff --git a/test/starknet/vanilla_voting_strategy.ts b/test/starknet/vanilla_voting_strategy.ts
new file mode 100644
index 00000000..91f62f2c
--- /dev/null
+++ b/test/starknet/vanilla_voting_strategy.ts
@@ -0,0 +1,26 @@
+import { StarknetContract } from 'hardhat/types/runtime';
+import { expect } from 'chai';
+import { starknet } from 'hardhat';
+import { SplitUint256 } from './shared/types';
+
+async function setup() {
+  const vanillaVotingStrategyFactory = await starknet.getContractFactory(
+    './contracts/starknet/strategies/vanilla_voting_strategy.cairo'
+  );
+  const vanillaVotingStrategy = await vanillaVotingStrategyFactory.deploy();
+  return {
+    vanillaVotingStrategy: vanillaVotingStrategy as StarknetContract,
+  };
+}
+
+describe('Snapshot X Vanilla Voting Strategy:', () => {
+  it('The voting strategy should return a voting power of 1', async () => {
+    const { vanillaVotingStrategy } = await setup();
+    const { voting_power: vp } = await vanillaVotingStrategy.call('get_voting_power', {
+      block: 1,
+      address: { value: BigInt('0xffffffffffffffffffff') },
+      params: [],
+    });
+    expect(new SplitUint256(vp.low, vp.high)).to.deep.equal(SplitUint256.fromUint(BigInt(1)));
+  }).timeout(60000);
+});
diff --git a/yarn.lock b/yarn.lock
index 9f29e8ea..ea8f4de5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -996,15 +996,17 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@shardlabs/starknet-hardhat-plugin@npm:^0.3.11":
-  version: 0.3.11
-  resolution: "@shardlabs/starknet-hardhat-plugin@npm:0.3.11"
+"@shardlabs/starknet-hardhat-plugin@npm:^0.4.2":
+  version: 0.4.2
+  resolution: "@shardlabs/starknet-hardhat-plugin@npm:0.4.2"
   dependencies:
     "@nomiclabs/hardhat-docker": ^2.0.2
     axios: ^0.24.0
     glob: ^7.2.0
+    starknet: ^2.5.1
+  peerDependencies:
     hardhat: ^2.8.2
-  checksum: 012dcb003b24179eec98a12224ab61fdf6efa5c8aa3935908f24e3dc57c3c651d1daab09d52ce0aff7743f51b31ec359a93af95e6a090498c83ede6841b734a4
+  checksum: 55c9b5823f498d39796a411dca3ede5754620b754a60da252301929bd96d7950980be78f31e43858d6ec48682b0e5ea04c09a217cbaa86ecc2a962236a49ed65
   languageName: node
   linkType: hard
 
@@ -6734,7 +6736,7 @@ fsevents@~2.3.2:
   languageName: node
   linkType: hard
 
-"hardhat@npm:^2.8.2, hardhat@npm:^2.8.3":
+"hardhat@npm:^2.8.3":
   version: 2.8.3
   resolution: "hardhat@npm:2.8.3"
   dependencies:
@@ -11491,7 +11493,7 @@ resolve@1.17.0:
     "@nomiclabs/hardhat-etherscan": ^2.1.8
     "@nomiclabs/hardhat-solhint": ^2.0.0
     "@nomiclabs/hardhat-waffle": ^2.0.2
-    "@shardlabs/starknet-hardhat-plugin": ^0.3.11
+    "@shardlabs/starknet-hardhat-plugin": ^0.4.2
     "@typechain/ethers-v5": ^7.2.0
     "@typechain/hardhat": ^2.3.1
     "@types/chai": ^4.3.0