diff --git a/package.json b/package.json
index 0680f9e..b0dd870 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
 	"dependencies": {
 		"@acala-network/chopsticks": "^1.0",
 		"@acala-network/chopsticks-testing": "^1.0",
-		"@polkadot/api": "^15.0",
+		"@polkadot/api": "^15.7",
 		"@swc/core": "^1.10.0",
 		"axios": "^1.7.9",
 		"dotenv": "^16.4.7",
diff --git a/yarn.lock b/yarn.lock
index 5cf65cc..65402be 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1167,6 +1167,21 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/api-augment@npm:15.7.2":
+  version: 15.7.2
+  resolution: "@polkadot/api-augment@npm:15.7.2"
+  dependencies:
+    "@polkadot/api-base": "npm:15.7.2"
+    "@polkadot/rpc-augment": "npm:15.7.2"
+    "@polkadot/types": "npm:15.7.2"
+    "@polkadot/types-augment": "npm:15.7.2"
+    "@polkadot/types-codec": "npm:15.7.2"
+    "@polkadot/util": "npm:^13.4.3"
+    tslib: "npm:^2.8.1"
+  checksum: 10/d03084c0d7b3ee86381484e84d490d2103583aeb4d2129c6122d3cd0c13553228cf912e93cc000af43ed6ca00eec50dd5a2936398a1a9a6c6a2b33b4041fd815
+  languageName: node
+  linkType: hard
+
 "@polkadot/api-base@npm:15.6.1, @polkadot/api-base@npm:^15.0":
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   resolution: "@polkadot/api-base@npm:15.6.1"
@@ -1180,6 +1195,19 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/api-base@npm:15.7.2":
+  version: 15.7.2
+  resolution: "@polkadot/api-base@npm:15.7.2"
+  dependencies:
+    "@polkadot/rpc-core": "npm:15.7.2"
+    "@polkadot/types": "npm:15.7.2"
+    "@polkadot/util": "npm:^13.4.3"
+    rxjs: "npm:^7.8.1"
+    tslib: "npm:^2.8.1"
+  checksum: 10/1772dda6789d70e2ffa7c4fda92951691999f76774b45f9f7d843d522a10027925b133bef53bd6fddddd6ed39636157515f41e952363e6a1f33b1e347cb2008b
+  languageName: node
+  linkType: hard
+
 "@polkadot/api-derive@npm:15.6.1":
   version: 15.6.1
   resolution: "@polkadot/api-derive@npm:15.6.1"
@@ -1198,6 +1226,24 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/api-derive@npm:15.7.2":
+  version: 15.7.2
+  resolution: "@polkadot/api-derive@npm:15.7.2"
+  dependencies:
+    "@polkadot/api": "npm:15.7.2"
+    "@polkadot/api-augment": "npm:15.7.2"
+    "@polkadot/api-base": "npm:15.7.2"
+    "@polkadot/rpc-core": "npm:15.7.2"
+    "@polkadot/types": "npm:15.7.2"
+    "@polkadot/types-codec": "npm:15.7.2"
+    "@polkadot/util": "npm:^13.4.3"
+    "@polkadot/util-crypto": "npm:^13.4.3"
+    rxjs: "npm:^7.8.1"
+    tslib: "npm:^2.8.1"
+  checksum: 10/6311ad62c989344e6b151380a2444cfdea014847efefac1c8f4771a9d4771ab2f0564d6d8e75e899404fb03c50d0e88ce70dca40d562a246d629e8444d64b98e
+  languageName: node
+  linkType: hard
+
 "@polkadot/api@npm:15.6.1, @polkadot/api@npm:^15.0":
   version: 15.6.1
   resolution: "@polkadot/api@npm:15.6.1"
@@ -1223,6 +1269,31 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/api@npm:15.7.2, @polkadot/api@npm:^15.7":
+  version: 15.7.2
+  resolution: "@polkadot/api@npm:15.7.2"
+  dependencies:
+    "@polkadot/api-augment": "npm:15.7.2"
+    "@polkadot/api-base": "npm:15.7.2"
+    "@polkadot/api-derive": "npm:15.7.2"
+    "@polkadot/keyring": "npm:^13.4.3"
+    "@polkadot/rpc-augment": "npm:15.7.2"
+    "@polkadot/rpc-core": "npm:15.7.2"
+    "@polkadot/rpc-provider": "npm:15.7.2"
+    "@polkadot/types": "npm:15.7.2"
+    "@polkadot/types-augment": "npm:15.7.2"
+    "@polkadot/types-codec": "npm:15.7.2"
+    "@polkadot/types-create": "npm:15.7.2"
+    "@polkadot/types-known": "npm:15.7.2"
+    "@polkadot/util": "npm:^13.4.3"
+    "@polkadot/util-crypto": "npm:^13.4.3"
+    eventemitter3: "npm:^5.0.1"
+    rxjs: "npm:^7.8.1"
+    tslib: "npm:^2.8.1"
+  checksum: 10/ec26e85ab588019385cfa09020c8a1230257442161ecd7302e5dd6602489124aec2e588e21d599523730a1d9bb52253a63e915c1a9aaffb69d832c08d5d78bcb
+  languageName: node
+  linkType: hard
+
 "@polkadot/keyring@npm:^13.2, @polkadot/keyring@npm:^13.4.3":
   version: 13.4.3
   resolution: "@polkadot/keyring@npm:13.4.3"
@@ -1261,6 +1332,19 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/rpc-augment@npm:15.7.2":
+  version: 15.7.2
+  resolution: "@polkadot/rpc-augment@npm:15.7.2"
+  dependencies:
+    "@polkadot/rpc-core": "npm:15.7.2"
+    "@polkadot/types": "npm:15.7.2"
+    "@polkadot/types-codec": "npm:15.7.2"
+    "@polkadot/util": "npm:^13.4.3"
+    tslib: "npm:^2.8.1"
+  checksum: 10/d5b7d65d87d404f5048ded8c131c11379fba43768a77637aed6e1ca71e4b1a1674a8cd59d0e82f36e2f958c7807ce27c71a9f6f8edad28dd99739197873eea79
+  languageName: node
+  linkType: hard
+
 "@polkadot/rpc-core@npm:15.6.1":
   version: 15.6.1
   resolution: "@polkadot/rpc-core@npm:15.6.1"
@@ -1275,6 +1359,20 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/rpc-core@npm:15.7.2":
+  version: 15.7.2
+  resolution: "@polkadot/rpc-core@npm:15.7.2"
+  dependencies:
+    "@polkadot/rpc-augment": "npm:15.7.2"
+    "@polkadot/rpc-provider": "npm:15.7.2"
+    "@polkadot/types": "npm:15.7.2"
+    "@polkadot/util": "npm:^13.4.3"
+    rxjs: "npm:^7.8.1"
+    tslib: "npm:^2.8.1"
+  checksum: 10/634a18921b714def620174e20cad9d5434c3c437aaea5733316209988a612c6eaaaac58dd77ae3266fa08996fd927fdcb46b5244320f9729533723ede496b956
+  languageName: node
+  linkType: hard
+
 "@polkadot/rpc-provider@npm:15.6.1, @polkadot/rpc-provider@npm:^15.0":
   version: 15.6.1
   resolution: "@polkadot/rpc-provider@npm:15.6.1"
@@ -1299,6 +1397,30 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/rpc-provider@npm:15.7.2":
+  version: 15.7.2
+  resolution: "@polkadot/rpc-provider@npm:15.7.2"
+  dependencies:
+    "@polkadot/keyring": "npm:^13.4.3"
+    "@polkadot/types": "npm:15.7.2"
+    "@polkadot/types-support": "npm:15.7.2"
+    "@polkadot/util": "npm:^13.4.3"
+    "@polkadot/util-crypto": "npm:^13.4.3"
+    "@polkadot/x-fetch": "npm:^13.4.3"
+    "@polkadot/x-global": "npm:^13.4.3"
+    "@polkadot/x-ws": "npm:^13.4.3"
+    "@substrate/connect": "npm:0.8.11"
+    eventemitter3: "npm:^5.0.1"
+    mock-socket: "npm:^9.3.1"
+    nock: "npm:^13.5.5"
+    tslib: "npm:^2.8.1"
+  dependenciesMeta:
+    "@substrate/connect":
+      optional: true
+  checksum: 10/d9d58d2360c73304ba6acb75f74ccb771f00d46a310953c42fd6495b8d05951a70c32dc778f0ba73e87fb13b6d3e4e26400c0ba5b39955bece72776e5e6b9f76
+  languageName: node
+  linkType: hard
+
 "@polkadot/types-augment@npm:15.6.1":
   version: 15.6.1
   resolution: "@polkadot/types-augment@npm:15.6.1"
@@ -1311,6 +1433,18 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/types-augment@npm:15.7.2":
+  version: 15.7.2
+  resolution: "@polkadot/types-augment@npm:15.7.2"
+  dependencies:
+    "@polkadot/types": "npm:15.7.2"
+    "@polkadot/types-codec": "npm:15.7.2"
+    "@polkadot/util": "npm:^13.4.3"
+    tslib: "npm:^2.8.1"
+  checksum: 10/40840ae96c619f581923aa3c45f576bbc492b2496885ce4659f3b71b1c0bdd48aaa93c64c1213ef4c2cfc74ce03fb0fac7284f45fa6b3015c7ae23be6118b23c
+  languageName: node
+  linkType: hard
+
 "@polkadot/types-codec@npm:15.6.1, @polkadot/types-codec@npm:^15.0":
   version: 15.6.1
   resolution: "@polkadot/types-codec@npm:15.6.1"
@@ -1322,6 +1456,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/types-codec@npm:15.7.2":
+  version: 15.7.2
+  resolution: "@polkadot/types-codec@npm:15.7.2"
+  dependencies:
+    "@polkadot/util": "npm:^13.4.3"
+    "@polkadot/x-bigint": "npm:^13.4.3"
+    tslib: "npm:^2.8.1"
+  checksum: 10/9d7fbb23f0b2613ad4dad99bb9074a106f3998411951bc55768c660d6f61b7a3dade1652120030ebd9ed446bd5ec996b4b70534c6abf1e4cef05410abf97946e
+  languageName: node
+  linkType: hard
+
 "@polkadot/types-create@npm:15.6.1":
   version: 15.6.1
   resolution: "@polkadot/types-create@npm:15.6.1"
@@ -1333,6 +1478,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/types-create@npm:15.7.2":
+  version: 15.7.2
+  resolution: "@polkadot/types-create@npm:15.7.2"
+  dependencies:
+    "@polkadot/types-codec": "npm:15.7.2"
+    "@polkadot/util": "npm:^13.4.3"
+    tslib: "npm:^2.8.1"
+  checksum: 10/12793fe3ca132670496ce0d0da4033f644da929c04ec4723bc29c4ca43937b2e117687f524ea41835cbfc22e08e5d2aa319c3b66790dfc42f9962d3434a9d73f
+  languageName: node
+  linkType: hard
+
 "@polkadot/types-known@npm:15.6.1, @polkadot/types-known@npm:^15.0":
   version: 15.6.1
   resolution: "@polkadot/types-known@npm:15.6.1"
@@ -1347,6 +1503,20 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/types-known@npm:15.7.2":
+  version: 15.7.2
+  resolution: "@polkadot/types-known@npm:15.7.2"
+  dependencies:
+    "@polkadot/networks": "npm:^13.4.3"
+    "@polkadot/types": "npm:15.7.2"
+    "@polkadot/types-codec": "npm:15.7.2"
+    "@polkadot/types-create": "npm:15.7.2"
+    "@polkadot/util": "npm:^13.4.3"
+    tslib: "npm:^2.8.1"
+  checksum: 10/727dc19c88a9854e3fbb85dca2395478a82a0c9d2c92233f21166f0ef84795cb855d7d36e7cb525ca51c93a42a823bdea3677582c0d24334204bb09e2b16e9c1
+  languageName: node
+  linkType: hard
+
 "@polkadot/types-support@npm:15.6.1":
   version: 15.6.1
   resolution: "@polkadot/types-support@npm:15.6.1"
@@ -1357,6 +1527,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/types-support@npm:15.7.2":
+  version: 15.7.2
+  resolution: "@polkadot/types-support@npm:15.7.2"
+  dependencies:
+    "@polkadot/util": "npm:^13.4.3"
+    tslib: "npm:^2.8.1"
+  checksum: 10/839e827cc1588d81be6763d231824559900c092a7cc843e5b3ce15d02e5f4652f50f04add274d9f61937ae97edaf6dd1f1c4a64276352193c083e00a35b0aa55
+  languageName: node
+  linkType: hard
+
 "@polkadot/types@npm:15.6.1, @polkadot/types@npm:^15.0":
   version: 15.6.1
   resolution: "@polkadot/types@npm:15.6.1"
@@ -1373,6 +1553,22 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@polkadot/types@npm:15.7.2":
+  version: 15.7.2
+  resolution: "@polkadot/types@npm:15.7.2"
+  dependencies:
+    "@polkadot/keyring": "npm:^13.4.3"
+    "@polkadot/types-augment": "npm:15.7.2"
+    "@polkadot/types-codec": "npm:15.7.2"
+    "@polkadot/types-create": "npm:15.7.2"
+    "@polkadot/util": "npm:^13.4.3"
+    "@polkadot/util-crypto": "npm:^13.4.3"
+    rxjs: "npm:^7.8.1"
+    tslib: "npm:^2.8.1"
+  checksum: 10/53d32a7f57d26909602d7da27ae49b189ef12f24cf4928672866a039867d6e49bc4ced6dd3bf793d03ab88572fc642d134afc609493404d927128f3fca6ac0d5
+  languageName: node
+  linkType: hard
+
 "@polkadot/util-crypto@npm:13.4.3, @polkadot/util-crypto@npm:^13.2, @polkadot/util-crypto@npm:^13.4.3":
   version: 13.4.3
   resolution: "@polkadot/util-crypto@npm:13.4.3"
@@ -2403,7 +2599,7 @@ __metadata:
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     "@acala-network/chopsticks-testing": "npm:^1.0"
     "@eslint/js": "npm:^9.16.0"
-    "@polkadot/api": "npm:^15.0"
+    "@polkadot/api": "npm:^15.7"
     "@swc/core": "npm:^1.10.0"
     "@types/eslint__js": "npm:^8.42.3"
     "@types/lodash": "npm:^4.17.13"