diff --git a/README.md b/README.md
index 50f4003..3026198 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,7 @@ function PermitExample() {
     spenderAddress: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045", // vitalik.eth
     contractAddress: "0xa2327a938febf5fec13bacfb16ae10ecbc4cbdcf", // usdc on mainnet
     value: parseEther("10"),
-    deadline: BigInt(Date.now() + 100_000),
+    deadline: BigInt(Math.floor(Date.now() / 1000) + 100_000),
   });
 
   return (
@@ -90,7 +90,7 @@ const { signPermit, signature } = usePermit({
   spenderAddress: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045", // vitalik.eth
   contractAddress: "0xa2327a938febf5fec13bacfb16ae10ecbc4cbdcf", // usdc on mainnet
   value: parseEther("10"),
-  deadline: BigInt(Date.now() + 100_000),
+  deadline: BigInt(Math.floor(Date.now() / 1000) + 100_000),
   /** Overrides */
   nonce: 2n,
   erc20Name: "Overriden Token Name",
@@ -132,7 +132,7 @@ function DaiPermitExample() {
     spenderAddress: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045", // vitalik.eth
     contractAddress: "0x6b175474e89094c44da98b954eedeac495271d0f", // dai on mainnet
     value: parseEther("10"),
-    deadline: BigInt(Date.now() + 100_000),
+    deadline: BigInt(Math.floor(Date.now() / 1000) + 100_000),
   });
 
   return (
@@ -167,7 +167,7 @@ async function signPermitForUSDC(walletClient: WalletClient) {
     contractAddress: "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
     erc20Name: "USD Coin",
     version: "2",
-    deadline: BigInt(Date.now() + 100_000),
+    deadline: BigInt(Math.floor(Date.now() / 1000) + 100_000),
     nonce: 0n,
     chainId: 1,
     value: 1_000_000_000n,
diff --git a/src/permit.test.ts b/src/permit.test.ts
index 2bb8fb4..7ecaadb 100644
--- a/src/permit.test.ts
+++ b/src/permit.test.ts
@@ -7,7 +7,7 @@ const spenderAddress = "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266";
 const ownerAddress = "0x70997970C51812dc3A010C7d01b50e0d17dc79C8";
 const contractAddress = "0x3C44CdDdB6a900fa2b585dd299e03d12FA4293BC";
 const erc20Name = "Test Token";
-const deadline = BigInt(Date.now() + 100_000);
+const deadline = BigInt(Math.floor(Date.now() / 1000) + 100_000);
 const nonce = 0n;
 const chainId = 1;
 const value = parseEther("10");