diff --git a/index.js b/index.js
index 661c520..1e42093 100644
--- a/index.js
+++ b/index.js
@@ -2,7 +2,7 @@ var bencode = require('bencode')
 var BitField = require('bitfield')
 var EventEmitter = require('events').EventEmitter
 var inherits = require('inherits')
-var sha1 = require('git-sha1')
+var sha1 = require('simple-sha1')
 
 var MAX_METADATA_SIZE = 10000000 // 10MB
 var BITFIELD_GROW = 1000
@@ -126,7 +126,7 @@ module.exports = function (metadata) {
     } catch (err) {}
 
     // check hash
-    if (this._infoHashHex && this._infoHashHex !== sha1(metadata)) {
+    if (this._infoHashHex && this._infoHashHex !== sha1.sync(metadata)) {
       return false
     }
 
diff --git a/package.json b/package.json
index b557da6..070bf36 100644
--- a/package.json
+++ b/package.json
@@ -13,8 +13,8 @@
   "dependencies": {
     "bencode": "^0.6.0",
     "bitfield": "^1.0.1",
-    "git-sha1": "^0.1.2",
-    "inherits": "^2.0.1"
+    "inherits": "^2.0.1",
+    "simple-sha1": "^2.0.0"
   },
   "devDependencies": {
     "bittorrent-protocol": "^1.0.0",