diff --git a/docs/docs/dev_docs/testing/cheat_codes.md b/docs/docs/dev_docs/testing/cheat_codes.md
index 3e1d63989e05..1baa9d18b418 100644
--- a/docs/docs/dev_docs/testing/cheat_codes.md
+++ b/docs/docs/dev_docs/testing/cheat_codes.md
@@ -6,7 +6,7 @@ title: Cheat Codes
 
 To help with testing, the sandbox is shipped with a set of cheatcodes.
 
-Cheatcodes allow you to change the time of the Aztec block, load certain state or more easily manipulate Ethereum instead of having to write dedicated RPC calls to anvil. 
+Cheatcodes allow you to change the time of the Aztec block, load certain state or more easily manipulate Ethereum instead of having to write dedicated RPC calls to anvil or hardhat. 
 
 :::info Prerequisites
 If you aren't familiar with [Anvil](https://book.getfoundry.sh/anvil/), we recommend reading up on that since Aztec Sandbox uses Anvil as the local Ethereum instance.
@@ -34,7 +34,7 @@ const cc = await CheatCodes.create(aztecRpcUrl, aztecRpcClient);
 There are two properties of the CheatCodes class - `eth` and `aztec` for cheatcodes relating to the Ethereum blockchain (L1) and the Aztec network (L2) respectively.
 
 ## Ethereum related cheatcodes
-These are cheatcodes exposed from anvil conveniently wrapped for ease of use in the Sandbox.
+These are cheatcodes exposed from anvil/hardhat conveniently wrapped for ease of use in the Sandbox.
 
 ### Interface
 ```
diff --git a/yarn-project/aztec.js/src/utils/cheat_codes.ts b/yarn-project/aztec.js/src/utils/cheat_codes.ts
index 41e641eaafee..bf296344b900 100644
--- a/yarn-project/aztec.js/src/utils/cheat_codes.ts
+++ b/yarn-project/aztec.js/src/utils/cheat_codes.ts
@@ -91,7 +91,7 @@ export class EthCheatCodes {
    * @returns The current chainId
    */
   public async mine(numberOfBlocks = 1): Promise<void> {
-    const res = await this.rpcCall('anvil_mine', [numberOfBlocks]);
+    const res = await this.rpcCall('hardhat_mine', [numberOfBlocks]);
     if (res.error) throw new Error(`Error mining: ${res.error.message}`);
     this.logger(`Mined ${numberOfBlocks} blocks`);
   }
@@ -101,7 +101,7 @@ export class EthCheatCodes {
    * @param timestamp - The timestamp to set the next block to
    */
   public async setNextBlockTimestamp(timestamp: number): Promise<void> {
-    const res = await this.rpcCall('anvil_setNextBlockTimestamp', [timestamp]);
+    const res = await this.rpcCall('evm_setNextBlockTimestamp', [timestamp]);
     if (res.error) throw new Error(`Error setting next block timestamp: ${res.error.message}`);
     this.logger(`Set next block timestamp to ${timestamp}`);
   }
@@ -111,7 +111,7 @@ export class EthCheatCodes {
    * @param fileName - The file name to dump state into
    */
   public async dumpChainState(fileName: string): Promise<void> {
-    const res = await this.rpcCall('anvil_dumpState', []);
+    const res = await this.rpcCall('hardhat_dumpState', []);
     if (res.error) throw new Error(`Error dumping state: ${res.error.message}`);
     const jsonContent = JSON.stringify(res.result);
     fs.writeFileSync(`${fileName}.json`, jsonContent, 'utf8');
@@ -124,7 +124,7 @@ export class EthCheatCodes {
    */
   public async loadChainState(fileName: string): Promise<void> {
     const data = JSON.parse(fs.readFileSync(`${fileName}.json`, 'utf8'));
-    const res = await this.rpcCall('anvil_loadState', [data]);
+    const res = await this.rpcCall('hardhat_loadState', [data]);
     if (res.error) throw new Error(`Error loading state: ${res.error.message}`);
     this.logger(`Loaded state from ${fileName}`);
   }
@@ -148,7 +148,7 @@ export class EthCheatCodes {
    */
   public async store(contract: EthAddress, slot: bigint, value: bigint): Promise<void> {
     // for the rpc call, we need to change value to be a 32 byte hex string.
-    const res = await this.rpcCall('anvil_setStorageAt', [contract.toString(), toHex(slot), toHex(value, true)]);
+    const res = await this.rpcCall('hardhat_setStorageAt', [contract.toString(), toHex(slot), toHex(value, true)]);
     if (res.error) throw new Error(`Error setting storage for contract ${contract} at ${slot}: ${res.error.message}`);
     this.logger(`Set storage for contract ${contract} at ${slot} to ${value}`);
   }
@@ -170,7 +170,7 @@ export class EthCheatCodes {
    * @param who - The address to impersonate
    */
   public async startImpersonating(who: EthAddress): Promise<void> {
-    const res = await this.rpcCall('anvil_impersonateAccount', [who.toString()]);
+    const res = await this.rpcCall('hardhat_impersonateAccount', [who.toString()]);
     if (res.error) throw new Error(`Error impersonating ${who}: ${res.error.message}`);
     this.logger(`Impersonating ${who}`);
   }
@@ -180,7 +180,7 @@ export class EthCheatCodes {
    * @param who - The address to stop impersonating
    */
   public async stopImpersonating(who: EthAddress): Promise<void> {
-    const res = await this.rpcCall('anvil_stopImpersonatingAccount', [who.toString()]);
+    const res = await this.rpcCall('hardhat_stopImpersonatingAccount', [who.toString()]);
     if (res.error) throw new Error(`Error when stopping the impersonation of ${who}: ${res.error.message}`);
     this.logger(`Stopped impersonating ${who}`);
   }
@@ -191,7 +191,7 @@ export class EthCheatCodes {
    * @param bytecode - The bytecode to set
    */
   public async etch(contract: EthAddress, bytecode: `0x${string}`): Promise<void> {
-    const res = await this.rpcCall('anvil_setCode', [contract.toString(), bytecode]);
+    const res = await this.rpcCall('hardhat_setCode', [contract.toString(), bytecode]);
     if (res.error) throw new Error(`Error setting bytecode for ${contract}: ${res.error.message}`);
     this.logger(`Set bytecode for ${contract} to ${bytecode}`);
   }