diff --git a/lib/cache.js b/lib/cache.js
index d8683003..426104ae 100644
--- a/lib/cache.js
+++ b/lib/cache.js
@@ -2,6 +2,15 @@ var levelup = require('levelup');
 var ttl     = require('level-ttl');
 var spaces  = require('level-spaces');
 var nconf   = require('nconf');
+var fs      = require('fs');
+var rimraf  = require('rimraf');
+var path    = require('path');
+
+var db_path = nconf.get('CACHE_FILE');
+
+if (fs.existsSync(path.join(db_path, 'LOCK'))) {
+  rimraf.sync(db_path);
+}
 
 var db = levelup(nconf.get('CACHE_FILE'));
 
diff --git a/package.json b/package.json
index 6c8d010c..d50eb284 100644
--- a/package.json
+++ b/package.json
@@ -49,6 +49,7 @@
     "passport-windowsauth": "~0.4.1",
     "randomstring": "~1.0.3",
     "request": "~2.16.6",
+    "rimraf": "~2.5.2",
     "selfsigned": "~1.2.0",
     "stream-rotate": "0.0.4",
     "thumbprint": "0.0.1",