diff --git a/README.md b/README.md
index d5eaac0..b427c5a 100644
--- a/README.md
+++ b/README.md
@@ -210,7 +210,7 @@ import { EAS } from "@ethereum-attestation-service/eas-sdk";
 const eas = new EAS(EASContractAddress);
 eas.connect(provider);
 
-const data = ethers.utils.formatBytes32String('0x1234');
+const data = ethers.encodeBytes32String('0x1234');
 
 const transaction = await eas.timestamp(data);
 
@@ -226,8 +226,8 @@ import { EAS } from "@ethereum-attestation-service/eas-sdk";
 const eas = new EAS(EASContractAddress);
 eas.connect(provider);
 
-const data1 = ethers.utils.formatBytes32String('0x3e23b395b2bd2d37dd0f6e4148ac6b9e7ed22f2215107958f95cc1489e4e6289');
-const data2 = ethers.utils.formatBytes32String('0x6776de8122c352b4d671003e58ca112aedb99f34c629a1d1fe3b332504e2943a');
+const data1 = ethers.encodeBytes32String('0x3e23b395b2bd2d37dd0f6e4148ac6b9e7ed22f2215107958f95cc1489e4e6289');
+const data2 = ethers.encodeBytes32String('0x6776de8122c352b4d671003e58ca112aedb99f34c629a1d1fe3b332504e2943a');
 
 const transaction = await eas.multiTimestamp([data1, data2]);
 
@@ -245,7 +245,7 @@ import { EAS } from "@ethereum-attestation-service/eas-sdk";
 const eas = new EAS(EASContractAddress);
 eas.connect(provider);
 
-const data = ethers.utils.formatBytes32String('0x6776de8122c352b4d671003e58ca112aedb99f34c629a1d1fe3b332504e2943a');
+const data = ethers.encodeBytes32String('0x6776de8122c352b4d671003e58ca112aedb99f34c629a1d1fe3b332504e2943a');
 
 const transaction = await eas.revokeOffchain(data);
 
@@ -261,8 +261,8 @@ import { EAS } from "@ethereum-attestation-service/eas-sdk";
 const eas = new EAS(EASContractAddress);
 eas.connect(provider);
 
-const data1 = ethers.utils.formatBytes32String('0x6776de8122c352b4d671003e58ca112aedb99f34c629a1d1fe3b332504e2943a');
-const data2 = ethers.utils.formatBytes32String('0x3e23b395b2bd2d37dd0f6e4148ac6b9e7ed22f2215107958f95cc1489e4e6289');
+const data1 = ethers.encodeBytes32String('0x6776de8122c352b4d671003e58ca112aedb99f34c629a1d1fe3b332504e2943a');
+const data2 = ethers.encodeBytes32String('0x3e23b395b2bd2d37dd0f6e4148ac6b9e7ed22f2215107958f95cc1489e4e6289');
 
 const transaction = await eas.multiRevokeOffchain([data1, data2]);