diff --git a/packages/shared/package.json b/packages/shared/package.json
index f5a42001..d43927cf 100644
--- a/packages/shared/package.json
+++ b/packages/shared/package.json
@@ -4,7 +4,7 @@
 	"dependencies": {
 		"@acala-network/chopsticks-testing": "^0.13.1",
 		"@e2e-test/networks": "workspace:*",
-		"@polkadot/api": "^12.1.1"
+		"@polkadot/api": "^12.4.2"
 	},
 	"main": "./dist/cjs/index.js",
 	"module": "./dist/esm/index.js",
diff --git a/yarn.lock b/yarn.lock
index 4d8e743b..77d34cc1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -137,7 +137,7 @@ __metadata:
   dependencies:
     "@acala-network/chopsticks-testing": "npm:^0.13.1"
     "@e2e-test/networks": "workspace:*"
-    "@polkadot/api": "npm:^12.1.1"
+    "@polkadot/api": "npm:^12.4.2"
   languageName: unknown
   linkType: soft
 
@@ -707,7 +707,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot-api/json-rpc-provider@npm:0.0.1":
+"@polkadot-api/json-rpc-provider-proxy@npm:^0.1.0":
+  version: 0.1.0
+  resolution: "@polkadot-api/json-rpc-provider-proxy@npm:0.1.0"
+  checksum: 10c0/e4b621fbbba5ae035f36932ce2ef6024d157a1612e26d8838ba6b92a78cd4718f4f12baa55ec7c700d213f8ecbe6e14569152ba3254b341b677b9e616c749f59
+  languageName: node
+  linkType: hard
+
+"@polkadot-api/json-rpc-provider@npm:0.0.1, @polkadot-api/json-rpc-provider@npm:^0.0.1":
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   resolution: "@polkadot-api/json-rpc-provider@npm:0.0.1"
   checksum: 10c0/90dc86693e7ef742c50484f4374d4b4f0eb7b5f7f618cf96a3dfed866fd18edf19132fc750b2944e8300d83c5601343f3876cbe60cd6bb1086301361d682ebd8
@@ -724,6 +731,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot-api/metadata-builders@npm:0.3.2":
+  version: 0.3.2
+  resolution: "@polkadot-api/metadata-builders@npm:0.3.2"
+  dependencies:
+    "@polkadot-api/substrate-bindings": "npm:0.6.0"
+    "@polkadot-api/utils": "npm:0.1.0"
+  checksum: 10c0/ac536e8d5dea4c4e241839750a46d003a86e6149428dbf9bdb794907547fdab219d38c805ba5fa0ea7150a0083c214866e28d7c2ec10621be97d2f8f8b013edf
+  languageName: node
+  linkType: hard
+
 "@polkadot-api/observable-client@npm:0.1.0":
   version: 0.1.0
   resolution: "@polkadot-api/observable-client@npm:0.1.0"
@@ -738,6 +755,20 @@ __metadata:
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   linkType: hard
 
+"@polkadot-api/observable-client@npm:^0.3.0":
+  version: 0.3.2
+  resolution: "@polkadot-api/observable-client@npm:0.3.2"
+  dependencies:
+    "@polkadot-api/metadata-builders": "npm:0.3.2"
+    "@polkadot-api/substrate-bindings": "npm:0.6.0"
+    "@polkadot-api/utils": "npm:0.1.0"
+  peerDependencies:
+    "@polkadot-api/substrate-client": 0.1.4
+    rxjs: ">=7.8.0"
+  checksum: 10c0/9f93fab03c37af0483f5c8487ec5250d366eb401a2c9744c014dfb4c7aa524645ae71f6b0e60761e2bca89bdcd862c119e4ac0e798123d8ee9f037eb2f4aaef3
+  languageName: node
+  linkType: hard
+
 "@polkadot-api/substrate-bindings@npm:0.0.1":
   version: 0.0.1
   resolution: "@polkadot-api/substrate-bindings@npm:0.0.1"
@@ -750,6 +781,18 @@ __metadata:
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   linkType: hard
 
+"@polkadot-api/substrate-bindings@npm:0.6.0":
+  version: 0.6.0
+  resolution: "@polkadot-api/substrate-bindings@npm:0.6.0"
+  dependencies:
+    "@noble/hashes": "npm:^1.3.1"
+    "@polkadot-api/utils": "npm:0.1.0"
+    "@scure/base": "npm:^1.1.1"
+    scale-ts: "npm:^1.6.0"
+  checksum: 10c0/6c5d2d4f1120e95b3fb0207ea186e74302b9075671132d62d94d6abcb8b38fe081b8514384c744c3630615caa474764ebdd18968bef73d0c29203946941f1d99
+  languageName: node
+  linkType: hard
+
 "@polkadot-api/substrate-client@npm:0.0.1":
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   resolution: "@polkadot-api/substrate-client@npm:0.0.1"
@@ -757,6 +800,16 @@ __metadata:
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   linkType: hard
 
+"@polkadot-api/substrate-client@npm:^0.1.2":
+  version: 0.1.4
+  resolution: "@polkadot-api/substrate-client@npm:0.1.4"
+  dependencies:
+    "@polkadot-api/json-rpc-provider": "npm:0.0.1"
+    "@polkadot-api/utils": "npm:0.1.0"
+  checksum: 10c0/7c9138ce52745f7e5f365f35d8caf3c192aee405ee576492eab8c47f5e9d09547a6141cc455ba21e69cf9f0f813fe6f5bcb0763342c33435a7678432961713db
+  languageName: node
+  linkType: hard
+
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   resolution: "@polkadot-api/utils@npm:0.0.1"
@@ -764,6 +817,13 @@ __metadata:
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   linkType: hard
 
+"@polkadot-api/utils@npm:0.1.0":
+  version: 0.1.0
+  resolution: "@polkadot-api/utils@npm:0.1.0"
+  checksum: 10c0/9b24522a30d0519df2d2bbfc65f7dbc94233950f829c4a6b042e02cc43b70c0ec43a7d06056cd7084d09e32d7c42caa2695732d25f673a31430391bed116fcae
+  languageName: node
+  linkType: hard
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   resolution: "@polkadot/api-augment@npm:12.1.1"
@@ -779,6 +839,21 @@ __metadata:
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   linkType: hard
 
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+  version: 12.4.2
+  resolution: "@polkadot/api-augment@npm:12.4.2"
+  dependencies:
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+    "@polkadot/rpc-augment": "npm:12.4.2"
+    "@polkadot/types": "npm:12.4.2"
+    "@polkadot/types-augment": "npm:12.4.2"
+    "@polkadot/types-codec": "npm:12.4.2"
+    "@polkadot/util": "npm:^13.0.2"
+    tslib: "npm:^2.6.3"
+  checksum: 10c0/4cab0d50cde43eb25d830fca93cdfe10198302d44a271aacfa274d171671ce4fa4b07bafd0886f8cf78ce10478762e337e9fe27a652080a1dc6f5823be05bcb3
+  languageName: node
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   resolution: "@polkadot/api-base@npm:12.1.1"
@@ -792,6 +867,19 @@ __metadata:
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   linkType: hard
 
+"@polkadot/api-base@npm:12.4.2":
+  version: 12.4.2
+  resolution: "@polkadot/api-base@npm:12.4.2"
+  dependencies:
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+    "@polkadot/types": "npm:12.4.2"
+    "@polkadot/util": "npm:^13.0.2"
+    rxjs: "npm:^7.8.1"
+    tslib: "npm:^2.6.3"
+  checksum: 10c0/b2e7b7a3f93070b09f5992f8128a378f47a8c808a08a2890c50abcaded040ab30e8b1b5c2b693c375f2187032dc8d010d407ac14e1e39fcb984a2e0f9f05e23d
+  languageName: node
+  linkType: hard
+
 "@polkadot/api-derive@npm:12.1.1":
   version: 12.1.1
   resolution: "@polkadot/api-derive@npm:12.1.1"
@@ -810,6 +898,24 @@ __metadata:
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   linkType: hard
 
+"@polkadot/api-derive@npm:12.4.2":
+  version: 12.4.2
+  resolution: "@polkadot/api-derive@npm:12.4.2"
+  dependencies:
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+    "@polkadot/api-augment": "npm:12.4.2"
+    "@polkadot/api-base": "npm:12.4.2"
+    "@polkadot/rpc-core": "npm:12.4.2"
+    "@polkadot/types": "npm:12.4.2"
+    "@polkadot/types-codec": "npm:12.4.2"
+    "@polkadot/util": "npm:^13.0.2"
+    "@polkadot/util-crypto": "npm:^13.0.2"
+    rxjs: "npm:^7.8.1"
+    tslib: "npm:^2.6.3"
+  checksum: 10c0/47f0698fa2b3f1adc03af93fbf7c533d8801bad52c7d8989ab019ce215bbd1c1e8d7a0c18d89839e86619ae9e93385cb7963feecc323dad79751de1496d0c23c
+  languageName: node
+  linkType: hard
+
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   resolution: "@polkadot/api@npm:12.1.1"
@@ -835,6 +941,31 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/api@npm:12.4.2, @polkadot/api@npm:^12.4.2":
+  version: 12.4.2
+  resolution: "@polkadot/api@npm:12.4.2"
+  dependencies:
+    "@polkadot/api-augment": "npm:12.4.2"
+    "@polkadot/api-base": "npm:12.4.2"
+    "@polkadot/api-derive": "npm:12.4.2"
+    "@polkadot/keyring": "npm:^13.0.2"
+    "@polkadot/rpc-augment": "npm:12.4.2"
+    "@polkadot/rpc-core": "npm:12.4.2"
+    "@polkadot/rpc-provider": "npm:12.4.2"
+    "@polkadot/types": "npm:12.4.2"
+    "@polkadot/types-augment": "npm:12.4.2"
+    "@polkadot/types-codec": "npm:12.4.2"
+    "@polkadot/types-create": "npm:12.4.2"
+    "@polkadot/types-known": "npm:12.4.2"
+    "@polkadot/util": "npm:^13.0.2"
+    "@polkadot/util-crypto": "npm:^13.0.2"
+    eventemitter3: "npm:^5.0.1"
+    rxjs: "npm:^7.8.1"
+    tslib: "npm:^2.6.3"
+  checksum: 10c0/64e9713508193a971e7fe830d39c625101b9dc9ce987ee38118d9a2e7e913eaeb9231cd7776b4d00ac293b23052c12ca6e7867fddacb8f7ec283017ee68ad1aa
+  languageName: node
+  linkType: hard
+
 "@polkadot/keyring@npm:^12.6.2":
   version: 12.6.2
   resolution: "@polkadot/keyring@npm:12.6.2"
@@ -849,6 +980,20 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/keyring@npm:^13.0.2":
+  version: 13.0.2
+  resolution: "@polkadot/keyring@npm:13.0.2"
+  dependencies:
+    "@polkadot/util": "npm:13.0.2"
+    "@polkadot/util-crypto": "npm:13.0.2"
+    tslib: "npm:^2.6.2"
+  peerDependencies:
+    "@polkadot/util": 13.0.2
+    "@polkadot/util-crypto": 13.0.2
+  checksum: 10c0/102fb4007b682f0ab54cb4a241d97b9028e49c6f1215323a89caea4b62f54376b46be9b1de4712d27e1e842fdaf8c8852c0bae70c4b1d663a21f939129eb99a8
+  languageName: node
+  linkType: hard
+
 "@polkadot/networks@npm:12.6.2, @polkadot/networks@npm:^12.6.2":
   version: 12.6.2
   resolution: "@polkadot/networks@npm:12.6.2"
@@ -860,6 +1005,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/networks@npm:13.0.2, @polkadot/networks@npm:^13.0.2":
+  version: 13.0.2
+  resolution: "@polkadot/networks@npm:13.0.2"
+  dependencies:
+    "@polkadot/util": "npm:13.0.2"
+    "@substrate/ss58-registry": "npm:^1.46.0"
+    tslib: "npm:^2.6.2"
+  checksum: 10c0/33fd8348638eb9ad0bc171dbc16cba3f4b904829383bce1f2e2da8b7498ac8ed63d5a0b7d41a6e397c4caf9ae429405085d92b599af920b498b229b52fc0db71
+  languageName: node
+  linkType: hard
+
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   version: 12.1.1
   resolution: "@polkadot/rpc-augment@npm:12.1.1"
@@ -873,6 +1029,19 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/rpc-augment@npm:12.4.2":
+  version: 12.4.2
+  resolution: "@polkadot/rpc-augment@npm:12.4.2"
+  dependencies:
+    "@polkadot/rpc-core": "npm:12.4.2"
+    "@polkadot/types": "npm:12.4.2"
+    "@polkadot/types-codec": "npm:12.4.2"
+    "@polkadot/util": "npm:^13.0.2"
+    tslib: "npm:^2.6.3"
+  checksum: 10c0/8e078db8496337c16bfb474cb557aaed5cccb2c1a3b8a56ad729fea308b23745c0cf5db10212f5653b60344add2084fc5ac7521a7b08c19fd309280e539336cf
+  languageName: node
+  linkType: hard
+
 "@polkadot/rpc-core@npm:12.1.1":
   version: 12.1.1
   resolution: "@polkadot/rpc-core@npm:12.1.1"
@@ -887,6 +1056,20 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/rpc-core@npm:12.4.2":
+  version: 12.4.2
+  resolution: "@polkadot/rpc-core@npm:12.4.2"
+  dependencies:
+    "@polkadot/rpc-augment": "npm:12.4.2"
+    "@polkadot/rpc-provider": "npm:12.4.2"
+    "@polkadot/types": "npm:12.4.2"
+    "@polkadot/util": "npm:^13.0.2"
+    rxjs: "npm:^7.8.1"
+    tslib: "npm:^2.6.3"
+  checksum: 10c0/4201b1d503801a672f2ceb0e6ab90226eb03c2d668879669656d73a952c556ba32e0a85c479d87ccd0aa80ce8fbc69ddde69abee462517dabc4736b3993deca6
+  languageName: node
+  linkType: hard
+
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   version: 12.1.1
   resolution: "@polkadot/rpc-provider@npm:12.1.1"
@@ -911,6 +1094,30 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/rpc-provider@npm:12.4.2":
+  version: 12.4.2
+  resolution: "@polkadot/rpc-provider@npm:12.4.2"
+  dependencies:
+    "@polkadot/keyring": "npm:^13.0.2"
+    "@polkadot/types": "npm:12.4.2"
+    "@polkadot/types-support": "npm:12.4.2"
+    "@polkadot/util": "npm:^13.0.2"
+    "@polkadot/util-crypto": "npm:^13.0.2"
+    "@polkadot/x-fetch": "npm:^13.0.2"
+    "@polkadot/x-global": "npm:^13.0.2"
+    "@polkadot/x-ws": "npm:^13.0.2"
+    "@substrate/connect": "npm:0.8.11"
+    eventemitter3: "npm:^5.0.1"
+    mock-socket: "npm:^9.3.1"
+    nock: "npm:^13.5.4"
+    tslib: "npm:^2.6.3"
+  dependenciesMeta:
+    "@substrate/connect":
+      optional: true
+  checksum: 10c0/59968dfae8ecaed840ec61c84d50953faf14d76dbcfcf61ef4acb88c9f4ef07c0c2b9c5227cb2b63801a0895d3f10edb686ae3126269eda5635f29796fa20fdf
+  languageName: node
+  linkType: hard
+
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   resolution: "@polkadot/types-augment@npm:12.1.1"
@@ -923,6 +1130,18 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/types-augment@npm:12.4.2":
+  version: 12.4.2
+  resolution: "@polkadot/types-augment@npm:12.4.2"
+  dependencies:
+    "@polkadot/types": "npm:12.4.2"
+    "@polkadot/types-codec": "npm:12.4.2"
+    "@polkadot/util": "npm:^13.0.2"
+    tslib: "npm:^2.6.3"
+  checksum: 10c0/9dcae5ec9fd7aaac9d3ffe2f5adb9b5c4704376018db4860215ca38805b189c5ef2f90360da0ff29d8b9a9715617bb5eabf6870bcfd8f9eeba974d6eb9b5bfab
+  languageName: node
+  linkType: hard
+
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   resolution: "@polkadot/types-codec@npm:12.1.1"
@@ -934,6 +1153,17 @@ __metadata:
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   linkType: hard
 
+"@polkadot/types-codec@npm:12.4.2":
+  version: 12.4.2
+  resolution: "@polkadot/types-codec@npm:12.4.2"
+  dependencies:
+    "@polkadot/util": "npm:^13.0.2"
+    "@polkadot/x-bigint": "npm:^13.0.2"
+    tslib: "npm:^2.6.3"
+  checksum: 10c0/2a56694e6998fc2afbe4fe8a9f9805eb251e880f1343af380f70c42965d30bae2249e5a5f346e675d5f78173770ebd4fa0758ed8b9f1397db8183eb686d11842
+  languageName: node
+  linkType: hard
+
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   resolution: "@polkadot/types-create@npm:12.1.1"
@@ -945,6 +1175,17 @@ __metadata:
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+"@polkadot/types-create@npm:12.4.2":
+  version: 12.4.2
+  resolution: "@polkadot/types-create@npm:12.4.2"
+  dependencies:
+    "@polkadot/types-codec": "npm:12.4.2"
+    "@polkadot/util": "npm:^13.0.2"
+    tslib: "npm:^2.6.3"
+  checksum: 10c0/c075d07c2d3212f0ab9772cd008bfadccde7a35f6366c6704a326f8e5199fce7e7eb7959a6bd229b69fcbc3900c522892f94b08b4cd991be6e42f2a786585d0f
+  languageName: node
+  linkType: hard
+
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@@ -959,6 +1200,20 @@ __metadata:
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   linkType: hard
 
+"@polkadot/types-known@npm:12.4.2":
+  version: 12.4.2
+  resolution: "@polkadot/types-known@npm:12.4.2"
+  dependencies:
+    "@polkadot/networks": "npm:^13.0.2"
+    "@polkadot/types": "npm:12.4.2"
+    "@polkadot/types-codec": "npm:12.4.2"
+    "@polkadot/types-create": "npm:12.4.2"
+    "@polkadot/util": "npm:^13.0.2"
+    tslib: "npm:^2.6.3"
+  checksum: 10c0/2e7fdd895c6478e102b91d7cb3428b75c34aa0b037ba9d2d2b97d350a19ed7bd6ea4f2c91c52eef4039ebec330fd1cd58a0f88fc30882c2a6623c0cae78b421a
+  languageName: node
+  linkType: hard
+
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@@ -969,6 +1224,16 @@ __metadata:
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   linkType: hard
 
+"@polkadot/types-support@npm:12.4.2":
+  version: 12.4.2
+  resolution: "@polkadot/types-support@npm:12.4.2"
+  dependencies:
+    "@polkadot/util": "npm:^13.0.2"
+    tslib: "npm:^2.6.3"
+  checksum: 10c0/0277fe88cac0f2447b3655bb5ca32dfe7dc7e35a82d22873baf95a0272a207f73853e94b3340e7e9230945dfaa8f14f93f4ffb13c8b29d449f602e8c5fe3f3c2
+  languageName: node
+  linkType: hard
+
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   resolution: "@polkadot/types@npm:12.1.1"
@@ -985,6 +1250,22 @@ __metadata:
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   linkType: hard
 
+"@polkadot/types@npm:12.4.2":
+  version: 12.4.2
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