diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9e582f5c..bbe4e9f9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,8 @@
 # Changelog
+## [1.3.12] - 2023-11-17
+### New
+- Added Klaytn mainnet and Testnet (Baobab)
+
 ## [1.3.11] - 2023-11-08
 ### Breaking Changes
 - Removed api_key from estimate function on the sdk and added the same on the queryString, please refer examples/13-paymaster.ts for more info
diff --git a/package-lock.json b/package-lock.json
index 66b8ac16..27c0165e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@etherspot/prime-sdk",
-  "version": "1.3.11",
+  "version": "1.3.12",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@etherspot/prime-sdk",
-      "version": "1.3.11",
+      "version": "1.3.12",
       "license": "MIT",
       "dependencies": {
         "@apollo/client": "3.8.6",
diff --git a/package.json b/package.json
index d539ba25..0767d67a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@etherspot/prime-sdk",
-  "version": "1.3.11",
+  "version": "1.3.12",
   "description": "Etherspot Prime (Account Abstraction) SDK",
   "keywords": [
     "ether",
diff --git a/src/sdk/network/constants.ts b/src/sdk/network/constants.ts
index f0d38a61..029e0cc1 100644
--- a/src/sdk/network/constants.ts
+++ b/src/sdk/network/constants.ts
@@ -31,10 +31,12 @@ export enum NetworkNames {
   Flare = 'flare',
   ScrollSepolia = 'scrollSepolia',
   Scroll = 'scroll',
+  Klaytn = 'klaytn',
+  KlaytnTestnet = 'klaytnTestnet',
 }
 
 export const SupportedNetworks =
-  [1, 5, 10, 14, 31, 56, 97, 100, 114, 122, 123, 137, 420, 2357, 5000, 5001, 8453, 10200, 20197, 42161, 43113, 43114, 59140, 59144, 80001, 84531, 421613, 534351, 534352, 11155111]
+  [1, 5, 10, 14, 31, 56, 97, 100, 114, 122, 123, 137, 420, 1001, 2357, 5000, 5001, 8217, 8453, 10200, 20197, 42161, 43113, 43114, 59140, 59144, 80001, 84531, 421613, 534351, 534352, 11155111]
 
 export const NETWORK_NAME_TO_CHAIN_ID: {
   [key: string]: number;
@@ -69,6 +71,8 @@ export const NETWORK_NAME_TO_CHAIN_ID: {
   [NetworkNames.Flare]: 14,
   [NetworkNames.ScrollSepolia]: 534351,
   [NetworkNames.Scroll]: 534352,
+  [NetworkNames.Klaytn]: 8217,
+  [NetworkNames.KlaytnTestnet]: 1001,
 };
 
 export const onRamperAllNetworks = ['OPTIMISM', 'POLYGON', 'ARBITRUM', 'FUSE', 'GNOSIS', 'ETHEREUM']
@@ -89,6 +93,19 @@ export const Networks: {
     },
     graphqlEndpoint: 'qa-etherspot.pillarproject.io',
   },
+  [1001]: {
+    chainId: 1001,
+    bundler: 'https://klaytntestnet-bundler.etherspot.io',
+    contracts: {
+      entryPoint: '0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789',
+      walletFactory: {
+        etherspot: '0x7f6d8F107fE8551160BD5351d5F1514A6aD5d40E',
+        zeroDev: '',
+        simpleAccount: '',
+      }
+    },
+    graphqlEndpoint: 'qa-etherspot.pillarproject.io',
+  }, 
   [80001]: {
     chainId: 80001,
     bundler: 'https://mumbai-bundler.etherspot.io',
@@ -167,6 +184,19 @@ export const Networks: {
     },
     graphqlEndpoint: 'etherspot.pillarproject.io',
   },
+  [8217]: {
+    chainId: 8217,
+    bundler: 'https://klaytn-bundler.etherspot.io',
+    contracts: {
+      entryPoint: '0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789',
+      walletFactory: {
+        etherspot: '0x7f6d8F107fE8551160BD5351d5F1514A6aD5d40E',
+        zeroDev: '',
+        simpleAccount: '',
+      }
+    },
+    graphqlEndpoint: 'etherspot.pillarproject.io',
+  },
   [1]: {
     chainId: 1,
     bundler: 'https://ethereum-bundler.etherspot.io/',