diff --git a/example/aggregator/package.json b/example/aggregator/package.json
index d50534b..c2eeffd 100644
--- a/example/aggregator/package.json
+++ b/example/aggregator/package.json
@@ -8,7 +8,7 @@
     "build": "tsc"
   },
   "dependencies": {
-    "@nervina-labs/cota-sdk": "0.4.8",
+    "@nervina-labs/cota-sdk": "0.5.0",
     "@types/node": "17.0.21",
     "ts-node": "10.7.0",
     "tslib": "2.4.0",
diff --git a/example/aggregator/yarn.lock b/example/aggregator/yarn.lock
index 4a26040..2a139ce 100644
--- a/example/aggregator/yarn.lock
+++ b/example/aggregator/yarn.lock
@@ -14,10 +14,10 @@
   dependencies:
     "@cspotcode/source-map-consumer" "0.8.0"
 
-"@nervina-labs/cota-sdk@0.4.8":
-  version "0.4.8"
-  resolved "https://registry.yarnpkg.com/@nervina-labs/cota-sdk/-/cota-sdk-0.4.8.tgz#f70ae1f46e34eb62205db877446a65e6d6aa020e"
-  integrity sha512-JqtSwcorEzUktZlvtyl4CkpVqeLet+LsWGbeS9QUqrW8iFli8LJLq+H7eDiEkLrlK29HSVn63e+lL6XgLT0XCQ==
+"@nervina-labs/cota-sdk@0.5.0":
+  version "0.5.0"
+  resolved "https://registry.yarnpkg.com/@nervina-labs/cota-sdk/-/cota-sdk-0.5.0.tgz#8095a3aec3d83c0cc8fc35574d6a4cbfd031b365"
+  integrity sha512-Yi48wnG+ykXrDYVgvnH3CACovhvTYw766+6qD5LsBalYCs7QWZwhhuaYq43hQb0N8G2xGrbPa0xR/qwZkew3/Q==
   dependencies:
     "@nervosnetwork/ckb-sdk-core" "^0.102.3"
     "@nervosnetwork/ckb-sdk-utils" "^0.102.3"
diff --git a/example/mainnet/package.json b/example/mainnet/package.json
index d150ab2..4f5633c 100644
--- a/example/mainnet/package.json
+++ b/example/mainnet/package.json
@@ -4,6 +4,6 @@
   "description": "The examples for mainnet",
   "license": "MIT",
   "dependencies": {
-    "@nervina-labs/cota-sdk": "0.4.8"
+    "@nervina-labs/cota-sdk": "0.5.0"
   }
 }
\ No newline at end of file
diff --git a/example/mainnet/yarn.lock b/example/mainnet/yarn.lock
index 56ea2f6..8fa5c8f 100644
--- a/example/mainnet/yarn.lock
+++ b/example/mainnet/yarn.lock
@@ -2,10 +2,10 @@
 # yarn lockfile v1
 
 
-"@nervina-labs/cota-sdk@0.4.8":
-  version "0.4.8"
-  resolved "https://registry.yarnpkg.com/@nervina-labs/cota-sdk/-/cota-sdk-0.4.8.tgz#f70ae1f46e34eb62205db877446a65e6d6aa020e"
-  integrity sha512-JqtSwcorEzUktZlvtyl4CkpVqeLet+LsWGbeS9QUqrW8iFli8LJLq+H7eDiEkLrlK29HSVn63e+lL6XgLT0XCQ==
+"@nervina-labs/cota-sdk@0.5.0":
+  version "0.5.0"
+  resolved "https://registry.yarnpkg.com/@nervina-labs/cota-sdk/-/cota-sdk-0.5.0.tgz#8095a3aec3d83c0cc8fc35574d6a4cbfd031b365"
+  integrity sha512-Yi48wnG+ykXrDYVgvnH3CACovhvTYw766+6qD5LsBalYCs7QWZwhhuaYq43hQb0N8G2xGrbPa0xR/qwZkew3/Q==
   dependencies:
     "@nervosnetwork/ckb-sdk-core" "^0.102.3"
     "@nervosnetwork/ckb-sdk-utils" "^0.102.3"
diff --git a/package.json b/package.json
index f12d570..7b49918 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@nervina-labs/cota-sdk",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "The SDK of CoTA",
   "repository": "git@github.com:nervina-labs/cota-sdk-js.git",
   "author": "duanyytop <duanyytop@gmail.com>",
@@ -40,7 +40,7 @@
     "eslint-config-prettier": "8.5.0",
     "eslint-plugin-import": "2.26.0",
     "eslint-plugin-prettier": "4.0.0",
-    "husky": "8.0.0",
+    "husky": "8.0.1",
     "prettier": "2.6.2",
     "ts-node": "10.7.0",
     "tslib": "2.4.0",
diff --git a/src/collector/index.ts b/src/collector/index.ts
index 61b4242..4296681 100644
--- a/src/collector/index.ts
+++ b/src/collector/index.ts
@@ -2,6 +2,7 @@ import axios from 'axios'
 import CKB from '@nervosnetwork/ckb-sdk-core'
 import { toCamelcase } from '../utils/case-parser'
 import { IndexerCell, CollectResult } from '../types/collector'
+import { MIN_CAPACITY } from '../constants'
 
 export class Collector {
   private ckbNodeUrl: string
@@ -79,13 +80,16 @@ export class Collector {
         since: '0x0',
       })
       sum = sum + BigInt(cell.output.capacity)
-      if (sum >= needCapacity + fee) {
+      if (sum >= needCapacity + MIN_CAPACITY + fee) {
         break
       }
     }
     if (sum < needCapacity + fee) {
       throw Error('Capacity not enough')
     }
+    if (sum < needCapacity + MIN_CAPACITY + fee) {
+      throw Error('Capacity not enough for change')
+    }
     return { inputs, capacity: sum }
   }
 
diff --git a/yarn.lock b/yarn.lock
index 80863ba..0ac8ae2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1036,10 +1036,10 @@ hmac-drbg@^1.0.1:
     minimalistic-assert "^1.0.0"
     minimalistic-crypto-utils "^1.0.1"
 
-husky@8.0.0:
-  version "8.0.0"
-  resolved "https://registry.yarnpkg.com/husky/-/husky-8.0.0.tgz#65b2d94765199d651615716a42ea52f3c2d997a0"
-  integrity sha512-4qbE/5dzNDNxFEkX9MNRPKl5+omTXQzdILCUWiqG/lWIAioiM5vln265/l6I2Zx8gpW8l1ukZwGQeCFbBZ6+6w==
+husky@8.0.1:
+  version "8.0.1"
+  resolved "https://registry.yarnpkg.com/husky/-/husky-8.0.1.tgz#511cb3e57de3e3190514ae49ed50f6bc3f50b3e9"
+  integrity sha512-xs7/chUH/CKdOCs7Zy0Aev9e/dKOMZf3K1Az1nar3tzlv0jfqnYtu235bstsWTmXOR0EfINrPa97yy4Lz6RiKw==
 
 ignore@^5.2.0:
   version "5.2.0"