diff --git a/index.js b/index.js
index dfa5517..997358a 100755
--- a/index.js
+++ b/index.js
@@ -67,8 +67,6 @@ forEachPackage(rootDir, function(packageName, packagePath) {
                 messages.push('    * ' + file + ': ' + statusTexts.join(', '));
             }
         }).then(function(config) {
-            repo.free();
-
             var packageJson = readPackageJson(packagePath);
 
             return {
@@ -219,4 +217,4 @@ function writePackageJsonText(packagePath, text) {
 
 function writePackageJson(packagePath, json) {
     writePackageJsonText(packagePath, JSON.stringify(json, undefined, '  '));
-}
\ No newline at end of file
+}
diff --git a/package.json b/package.json
index 1c50a7a..4076793 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
   },
   "homepage": "https://github.com/TerriaJS/npmgitdev#readme",
   "dependencies": {
-    "nodegit": "^0.18.0"
+    "nodegit": "^0.27.0"
   },
   "engineStrict": true,
   "engines": {