diff --git a/blockchain-configs/afan-shard/node_params.json b/blockchain-configs/afan-shard/node_params.json
index 4a4b33eb3..78c5dab93 100644
--- a/blockchain-configs/afan-shard/node_params.json
+++ b/blockchain-configs/afan-shard/node_params.json
@@ -30,7 +30,7 @@
   "ENABLE_TX_SIG_VERIF_WORKAROUND": false,
   "EVENT_HANDLER_FILTER_DELETION_TIMEOUT_MS": 15000,
   "EVENT_HANDLER_HEARTBEAT_INTERVAL_MS": 15000,
-  "EVENT_HANDLER_PORT": 6000,
+  "EVENT_HANDLER_PORT": 5100,
   "EXPRESS_RATE_LIMIT_WINDOW_SECS": 60,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO": 0.1,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO_PER_ACCOUNT": 0.1,
diff --git a/blockchain-configs/base/node_params.json b/blockchain-configs/base/node_params.json
index a31d11087..6b43df148 100644
--- a/blockchain-configs/base/node_params.json
+++ b/blockchain-configs/base/node_params.json
@@ -30,7 +30,7 @@
   "ENABLE_TX_SIG_VERIF_WORKAROUND": false,
   "EVENT_HANDLER_FILTER_DELETION_TIMEOUT_MS": 100000,
   "EVENT_HANDLER_HEARTBEAT_INTERVAL_MS": 15000,
-  "EVENT_HANDLER_PORT": 6000,
+  "EVENT_HANDLER_PORT": 5100,
   "EXPRESS_RATE_LIMIT_WINDOW_SECS": 60,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO": 0.1,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO_PER_ACCOUNT": 0.1,
diff --git a/blockchain-configs/he-shard/node_params.json b/blockchain-configs/he-shard/node_params.json
index 7f5d44d25..612b441f9 100644
--- a/blockchain-configs/he-shard/node_params.json
+++ b/blockchain-configs/he-shard/node_params.json
@@ -30,7 +30,7 @@
   "ENABLE_TX_SIG_VERIF_WORKAROUND": false,
   "EVENT_HANDLER_FILTER_DELETION_TIMEOUT_MS": 15000,
   "EVENT_HANDLER_HEARTBEAT_INTERVAL_MS": 15000,
-  "EVENT_HANDLER_PORT": 6000,
+  "EVENT_HANDLER_PORT": 5100,
   "EXPRESS_RATE_LIMIT_WINDOW_SECS": 60,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO": 0.1,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO_PER_ACCOUNT": 0.1,
diff --git a/blockchain-configs/mainnet-prod/node_params.json b/blockchain-configs/mainnet-prod/node_params.json
index 66037136f..9a7743e73 100644
--- a/blockchain-configs/mainnet-prod/node_params.json
+++ b/blockchain-configs/mainnet-prod/node_params.json
@@ -29,7 +29,7 @@
   "ENABLE_TX_SIG_VERIF_WORKAROUND": false,
   "EVENT_HANDLER_FILTER_DELETION_TIMEOUT_MS": 100000,
   "EVENT_HANDLER_HEARTBEAT_INTERVAL_MS": 15000,
-  "EVENT_HANDLER_PORT": 6000,
+  "EVENT_HANDLER_PORT": 5100,
   "EXPRESS_RATE_LIMIT_WINDOW_SECS": 60,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO": 0.1,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO_PER_ACCOUNT": 0.1,
diff --git a/blockchain-configs/sim-shard/node_params.json b/blockchain-configs/sim-shard/node_params.json
index b64f7d0a2..ec274b413 100644
--- a/blockchain-configs/sim-shard/node_params.json
+++ b/blockchain-configs/sim-shard/node_params.json
@@ -30,7 +30,7 @@
   "ENABLE_TX_SIG_VERIF_WORKAROUND": false,
   "EVENT_HANDLER_FILTER_DELETION_TIMEOUT_MS": 100000,
   "EVENT_HANDLER_HEARTBEAT_INTERVAL_MS": 15000,
-  "EVENT_HANDLER_PORT": 6000,
+  "EVENT_HANDLER_PORT": 5100,
   "EXPRESS_RATE_LIMIT_WINDOW_SECS": 60,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO": 0.1,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO_PER_ACCOUNT": 0.1,
diff --git a/blockchain-configs/testnet-dev/node_params.json b/blockchain-configs/testnet-dev/node_params.json
index bd25ec961..ec1ba0a0b 100644
--- a/blockchain-configs/testnet-dev/node_params.json
+++ b/blockchain-configs/testnet-dev/node_params.json
@@ -30,7 +30,7 @@
   "ENABLE_TX_SIG_VERIF_WORKAROUND": false,
   "EVENT_HANDLER_FILTER_DELETION_TIMEOUT_MS": 100000,
   "EVENT_HANDLER_HEARTBEAT_INTERVAL_MS": 15000,
-  "EVENT_HANDLER_PORT": 6000,
+  "EVENT_HANDLER_PORT": 5100,
   "EXPRESS_RATE_LIMIT_WINDOW_SECS": 60,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO": 0.1,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO_PER_ACCOUNT": 0.1,
diff --git a/blockchain-configs/testnet-exp/node_params.json b/blockchain-configs/testnet-exp/node_params.json
index 35a4a77d6..4144f6548 100644
--- a/blockchain-configs/testnet-exp/node_params.json
+++ b/blockchain-configs/testnet-exp/node_params.json
@@ -30,7 +30,7 @@
   "ENABLE_TX_SIG_VERIF_WORKAROUND": false,
   "EVENT_HANDLER_FILTER_DELETION_TIMEOUT_MS": 100000,
   "EVENT_HANDLER_HEARTBEAT_INTERVAL_MS": 15000,
-  "EVENT_HANDLER_PORT": 6000,
+  "EVENT_HANDLER_PORT": 5100,
   "EXPRESS_RATE_LIMIT_WINDOW_SECS": 60,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO": 0.1,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO_PER_ACCOUNT": 0.1,
diff --git a/blockchain-configs/testnet-prod/node_params.json b/blockchain-configs/testnet-prod/node_params.json
index 2f04e8409..016e85803 100644
--- a/blockchain-configs/testnet-prod/node_params.json
+++ b/blockchain-configs/testnet-prod/node_params.json
@@ -30,7 +30,7 @@
   "ENABLE_TX_SIG_VERIF_WORKAROUND": false,
   "EVENT_HANDLER_FILTER_DELETION_TIMEOUT_MS": 100000,
   "EVENT_HANDLER_HEARTBEAT_INTERVAL_MS": 15000,
-  "EVENT_HANDLER_PORT": 6000,
+  "EVENT_HANDLER_PORT": 5100,
   "EXPRESS_RATE_LIMIT_WINDOW_SECS": 60,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO": 0.1,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO_PER_ACCOUNT": 0.1,
diff --git a/blockchain-configs/testnet-sandbox/node_params.json b/blockchain-configs/testnet-sandbox/node_params.json
index 0089bd695..7e41c7c0c 100644
--- a/blockchain-configs/testnet-sandbox/node_params.json
+++ b/blockchain-configs/testnet-sandbox/node_params.json
@@ -30,7 +30,7 @@
   "ENABLE_TX_SIG_VERIF_WORKAROUND": false,
   "EVENT_HANDLER_FILTER_DELETION_TIMEOUT_MS": 100000,
   "EVENT_HANDLER_HEARTBEAT_INTERVAL_MS": 15000,
-  "EVENT_HANDLER_PORT": 6000,
+  "EVENT_HANDLER_PORT": 5100,
   "EXPRESS_RATE_LIMIT_WINDOW_SECS": 60,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO": 0.1,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO_PER_ACCOUNT": 0.1,
diff --git a/blockchain-configs/testnet-staging/node_params.json b/blockchain-configs/testnet-staging/node_params.json
index 36d7f95ec..088ff3a39 100644
--- a/blockchain-configs/testnet-staging/node_params.json
+++ b/blockchain-configs/testnet-staging/node_params.json
@@ -30,7 +30,7 @@
   "ENABLE_TX_SIG_VERIF_WORKAROUND": false,
   "EVENT_HANDLER_FILTER_DELETION_TIMEOUT_MS": 100000,
   "EVENT_HANDLER_HEARTBEAT_INTERVAL_MS": 15000,
-  "EVENT_HANDLER_PORT": 6000,
+  "EVENT_HANDLER_PORT": 5100,
   "EXPRESS_RATE_LIMIT_WINDOW_SECS": 60,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO": 0.1,
   "FREE_TX_POOL_SIZE_LIMIT_RATIO_PER_ACCOUNT": 0.1,
diff --git a/client/protocol_versions.json b/client/protocol_versions.json
index 191dc587b..e82aff557 100644
--- a/client/protocol_versions.json
+++ b/client/protocol_versions.json
@@ -140,5 +140,8 @@
   },
   "1.2.0": {
     "min": "1.0.0"
+  },
+  "1.3.0": {
+    "min": "1.0.0"
   }
 }
\ No newline at end of file
diff --git a/package.json b/package.json
index ade8a91ac..be10029be 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "ain-blockchain",
   "description": "AI Network Blockchain",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "private": true,
   "license": "MIT",
   "author": "dev@ainetwork.ai",
diff --git a/test/integration/event_handler.test.js b/test/integration/event_handler.test.js
index 7a9d8b2d6..c0fc19b7f 100644
--- a/test/integration/event_handler.test.js
+++ b/test/integration/event_handler.test.js
@@ -42,7 +42,7 @@ const ENV_VARIABLES = [
     UNSAFE_PRIVATE_KEY: '41e6e5718188ce9afd25e4b386482ac2c5272c49a622d8d217887bce21dce560',
     BLOCKCHAIN_CONFIGS_DIR: 'blockchain-configs/3-nodes', PORT: 8083, P2P_PORT: 5003,
     ENABLE_GAS_FEE_WORKAROUND: true, ENABLE_EXPRESS_RATE_LIMIT: false,
-    ENABLE_EVENT_HANDLER: true, EVENT_HANDLER_PORT: 6000,
+    ENABLE_EVENT_HANDLER: true, EVENT_HANDLER_PORT: 5100,
     // NOTE(ehgmsdk20): Epoch time for test nodes is 1000ms, so set
     // EVENT_HANDLER_FILTER_DELETION_TIMEOUT_MS = 5 * epoch_ms = 5000
     EVENT_HANDLER_FILTER_DELETION_TIMEOUT_MS: 5000,