diff --git a/CHANGELOG.md b/CHANGELOG.md
index 18f217bc5..11fa4d404 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## [4.2.36] - 2024.7.2
+
+### Added
+
+- Support for Optimism Notifications
+
 ## [4.2.35] - 2024.6.18
 
 ### Updated
diff --git a/package.json b/package.json
index f4ae6629c..011cb62bd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tatumio/tatum",
-  "version": "4.2.35",
+  "version": "4.2.36",
   "description": "Tatum JS SDK",
   "author": "Tatum",
   "repository": "https://github.com/tatumio/tatum-js",
diff --git a/src/dto/AddressEventNotificationChain.ts b/src/dto/AddressEventNotificationChain.ts
index 6fe8f3122..239499fad 100644
--- a/src/dto/AddressEventNotificationChain.ts
+++ b/src/dto/AddressEventNotificationChain.ts
@@ -18,4 +18,5 @@ export enum AddressEventNotificationChain {
   CRO = 'CRO',
   BASE = 'BASE',
   AVAX = 'AVAX',
+  OPTIMISM = 'OPTIMISM',
 }
diff --git a/src/e2e/e2e.constant.ts b/src/e2e/e2e.constant.ts
index ca513a804..710ea33a5 100644
--- a/src/e2e/e2e.constant.ts
+++ b/src/e2e/e2e.constant.ts
@@ -42,6 +42,8 @@ export const AddressEventNetworks = [
   Network.BASE_SEPOLIA,
   Network.AVALANCHE_C,
   Network.AVALANCHE_C_TESTNET,
+  Network.OPTIMISM,
+  Network.OPTIMISM_TESTNET,
 ]
 
 export const IncomingNativeTxNetworks = [
@@ -81,6 +83,8 @@ export const IncomingNativeTxNetworks = [
   Network.BASE_SEPOLIA,
   Network.AVALANCHE_C,
   Network.AVALANCHE_C_TESTNET,
+  Network.OPTIMISM,
+  Network.OPTIMISM_TESTNET,
 ]
 
 export const OutgoingNativeTxNetworks = [
@@ -118,6 +122,8 @@ export const OutgoingNativeTxNetworks = [
   Network.BASE_SEPOLIA,
   Network.AVALANCHE_C,
   Network.AVALANCHE_C_TESTNET,
+  Network.OPTIMISM,
+  Network.OPTIMISM_TESTNET,
 ]
 
 export const OutgoingFailedNetworks = [
@@ -143,6 +149,8 @@ export const OutgoingFailedNetworks = [
   Network.BASE_SEPOLIA,
   Network.AVALANCHE_C,
   Network.AVALANCHE_C_TESTNET,
+  Network.OPTIMISM,
+  Network.OPTIMISM_TESTNET,
 ]
 
 export const PaidFeeNetworks = [
@@ -172,6 +180,8 @@ export const PaidFeeNetworks = [
   Network.BASE_SEPOLIA,
   Network.AVALANCHE_C,
   Network.AVALANCHE_C_TESTNET,
+  Network.OPTIMISM,
+  Network.OPTIMISM_TESTNET,
 ]
 
 export const FungibleTxNetworks = [
@@ -201,6 +211,8 @@ export const FungibleTxNetworks = [
   Network.BASE_SEPOLIA,
   Network.AVALANCHE_C,
   Network.AVALANCHE_C_TESTNET,
+  Network.OPTIMISM,
+  Network.OPTIMISM_TESTNET,
 ]
 
 export const NftNetworks = [
@@ -230,6 +242,8 @@ export const NftNetworks = [
   Network.BASE_SEPOLIA,
   Network.AVALANCHE_C,
   Network.AVALANCHE_C_TESTNET,
+  Network.OPTIMISM,
+  Network.OPTIMISM_TESTNET,
 ]
 
 export const MultitokenNetworks = [
@@ -254,6 +268,8 @@ export const MultitokenNetworks = [
   Network.BASE_SEPOLIA,
   Network.AVALANCHE_C,
   Network.AVALANCHE_C_TESTNET,
+  Network.OPTIMISM,
+  Network.OPTIMISM_TESTNET,
 ]
 
 export const FailedTxPerBlockNetworks = [
@@ -283,6 +299,8 @@ export const FailedTxPerBlockNetworks = [
   Network.BASE_SEPOLIA,
   Network.AVALANCHE_C,
   Network.AVALANCHE_C_TESTNET,
+  Network.OPTIMISM,
+  Network.OPTIMISM_TESTNET,
 ]
 
 export const ContractAddressLogEventNetworks = [
@@ -320,4 +338,5 @@ export const InternalTxNetworks = [
   Network.CRONOS,
   Network.BASE,
   Network.AVALANCHE_C,
+  Network.OPTIMISM,
 ]
diff --git a/src/e2e/e2e.util.ts b/src/e2e/e2e.util.ts
index 40c2cdd21..45424226e 100644
--- a/src/e2e/e2e.util.ts
+++ b/src/e2e/e2e.util.ts
@@ -39,6 +39,8 @@ export const e2eUtil = {
         case Network.BASE_SEPOLIA:
         case Network.AVALANCHE_C:
         case Network.AVALANCHE_C_TESTNET:
+        case Network.OPTIMISM:
+        case Network.OPTIMISM_TESTNET:
           return '0xdb4C3b4350EE869F2D0a2F43ce0292865E2Aa149'
         case Network.CELO_ALFAJORES:
           return '0xdf083B077F1FD890fC71feCaBbd3F68F94cD21Bf'
diff --git a/src/service/tatum/tatum.evm.ts b/src/service/tatum/tatum.evm.ts
index 9a45bb89c..57590f541 100644
--- a/src/service/tatum/tatum.evm.ts
+++ b/src/service/tatum/tatum.evm.ts
@@ -61,7 +61,7 @@ export class Haqq extends BaseEvm {}
 export class HarmonyOne extends BaseEvm {}
 export class Kucoin extends BaseEvm {}
 export class Oasis extends BaseEvm {}
-export class Optimism extends BaseEvm {}
+export class Optimism extends NotificationEvm {}
 export class Palm extends BaseEvm {}
 export class Vechain extends BaseEvm {}
 export class XinFin extends BaseEvm {}
diff --git a/src/util/util.shared.ts b/src/util/util.shared.ts
index b67467b78..833a74f44 100644
--- a/src/util/util.shared.ts
+++ b/src/util/util.shared.ts
@@ -562,6 +562,8 @@ export const Utils = {
         return Network.BASE
       case AddressEventNotificationChain.AVAX:
         return Network.AVALANCHE_C
+      case AddressEventNotificationChain.OPTIMISM:
+        return Network.OPTIMISM
       default:
         throw new Error(`Chain ${chain} is not supported.`)
     }
@@ -625,6 +627,9 @@ export const Utils = {
       case Network.AVALANCHE_C:
       case Network.AVALANCHE_C_TESTNET:
         return AddressEventNotificationChain.AVAX
+      case Network.OPTIMISM:
+      case Network.OPTIMISM_TESTNET:
+        return AddressEventNotificationChain.OPTIMISM
       default:
         throw new Error(`Network ${network} is not supported.`)
     }