diff --git a/node/app.js b/node/app.js
index 46f08fff2..674ab2f09 100644
--- a/node/app.js
+++ b/node/app.js
@@ -6,6 +6,7 @@ const cookieParser = require('cookie-parser');
 const bodyParser = require('body-parser');
 const helmet = require('helmet');
 const session = require('express-session');
+const FileStore = require('session-file-store')(session);
 
 const appRoute = require('./routes/app');
 const loginRoute = require('./routes/login');
@@ -48,7 +49,11 @@ app.use(session({
     //    path: "/",
         httpOnly: true,
         maxAge:  1800000
-    }
+    },
+    store: new FileStore({
+        ttl: 3600,
+        path: '../sessions'
+    })
 }));
 // uncomment after placing your favicon in /public
 //app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
diff --git a/node/package.json b/node/package.json
index 0925c8738..5947455a9 100644
--- a/node/package.json
+++ b/node/package.json
@@ -19,6 +19,7 @@
     "morgan": "~1.9.0",
     "scrypt": "^6.0.3",
     "serve-favicon": "~2.4.5",
+    "session-file-store": "^1.1.2",
     "sqlite": "^2.8.0"
   }
 }
diff --git a/node/utils.js b/node/utils.js
index 7bd53a02e..31f05ff95 100644
--- a/node/utils.js
+++ b/node/utils.js
@@ -19,7 +19,7 @@ function randomString(length, chars) {
 }
 
 function nowTimestamp() {
-    return Date.now() / 1000;
+    return Math.floor(Date.now() / 1000);
 }
 
 function toBase64(plainText) {