diff --git a/Hands-on lab/lab-files/package-lock.json b/Hands-on lab/lab-files/package-lock.json
old mode 100755
new mode 100644
index 873357f..d238111
--- a/Hands-on lab/lab-files/package-lock.json	
+++ b/Hands-on lab/lab-files/package-lock.json	
@@ -9383,22 +9383,28 @@
       }
     },
     "mongodb": {
-      "version": "2.2.33",
-      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-2.2.33.tgz",
-      "integrity": "sha1-tTfEcdNKZlG0jzb9vyl1A0Dgi1A=",
+      "version": "3.1.13",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.1.13.tgz",
+      "integrity": "sha512-sz2dhvBZQWf3LRNDhbd30KHVzdjZx9IKC0L+kSZ/gzYquCF5zPOgGqRz6sSCqYZtKP2ekB4nfLxhGtzGHnIKxA==",
       "requires": {
-        "es6-promise": "3.2.1",
-        "mongodb-core": "2.1.17",
-        "readable-stream": "2.2.7"
+        "mongodb-core": "3.1.11",
+        "safe-buffer": "^5.1.2"
       },
       "dependencies": {
+        "bson": {
+          "version": "1.1.5",
+          "resolved": "https://registry.npmjs.org/bson/-/bson-1.1.5.tgz",
+          "integrity": "sha512-kDuEzldR21lHciPQAIulLs1LZlCXdLziXI6Mb/TDkwXhb//UORJNPXgcRs2CuO4H0DcMkpfT3/ySsP3unoZjBg=="
+        },
         "mongodb-core": {
-          "version": "2.1.17",
-          "resolved": "https://registry.npmjs.org/mongodb-core/-/mongodb-core-2.1.17.tgz",
-          "integrity": "sha1-pBizN6FKFJkPtRC5I97mqBMXPfg=",
+          "version": "3.1.11",
+          "resolved": "https://registry.npmjs.org/mongodb-core/-/mongodb-core-3.1.11.tgz",
+          "integrity": "sha512-rD2US2s5qk/ckbiiGFHeu+yKYDXdJ1G87F6CG3YdaZpzdOm5zpoAZd/EKbPmFO6cQZ+XVXBXBJ660sSI0gc6qg==",
           "requires": {
-            "bson": "~1.0.4",
-            "require_optional": "~1.0.0"
+            "bson": "^1.1.0",
+            "require_optional": "^1.0.1",
+            "safe-buffer": "^5.1.2",
+            "saslprep": "^1.0.0"
           }
         }
       }
diff --git a/Hands-on lab/lab-files/package.json b/Hands-on lab/lab-files/package.json
index e4d94fe..87d52da 100644
--- a/Hands-on lab/lab-files/package.json	
+++ b/Hands-on lab/lab-files/package.json	
@@ -12,7 +12,7 @@
     "connect-mongo": "^2.0.3",
     "express": "^4.16.4",
     "express-session": "^1.15.6",
-    "mongodb": "^2.2.33",
+    "mongodb": "^3.1.13",
     "mongoose": "^5.4.21",
     "morgan": "^1.9.1",
     "react": "^16.8.6",