diff --git a/course-04/exercises/c4-demos-master/05-http-metrics/package-lock.json b/course-04/exercises/c4-demos-master/05-http-metrics/package-lock.json
old mode 100755
new mode 100644
index f9dcd97..48fd170
--- a/course-04/exercises/c4-demos-master/05-http-metrics/package-lock.json
+++ b/course-04/exercises/c4-demos-master/05-http-metrics/package-lock.json
@@ -47,14 +47,6 @@
                 "isarray": "^1.0.0"
             }
         },
-        "debug": {
-            "version": "3.2.6",
-            "resolved": "https://nexus.solutions.consensys-uk.net/repository/komgo-npm-group/debug/-/debug-3.2.6.tgz",
-            "integrity": "sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==",
-            "requires": {
-                "ms": "^2.1.1"
-            }
-        },
         "events": {
             "version": "1.1.1",
             "resolved": "https://nexus.solutions.consensys-uk.net/repository/komgo-npm-group/events/-/events-1.1.1.tgz",
@@ -62,12 +54,9 @@
             "dev": true
         },
         "follow-redirects": {
-            "version": "1.7.0",
-            "resolved": "https://nexus.solutions.consensys-uk.net/repository/komgo-npm-group/follow-redirects/-/follow-redirects-1.7.0.tgz",
-            "integrity": "sha512-m/pZQy4Gj287eNy94nivy5wchN3Kp+Q5WgUPNy5lJSZ3sgkVKSYV/ZChMAQVIgx1SqfZ2zBZtPA2YlXIWxxJOQ==",
-            "requires": {
-                "debug": "^3.2.6"
-            }
+            "version": "1.14.7",
+            "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.14.7.tgz",
+            "integrity": "sha512-+hbxoLbFMbRKDwohX8GkTataGqO6Jb7jGwpAlwgy2bIz25XtRm7KEzJM76R1WiNT5SwZkX4Y75SwBolkpmE7iQ=="
         },
         "ieee754": {
             "version": "1.1.8",
@@ -92,11 +81,6 @@
             "integrity": "sha1-o/Iiqarp+Wb10nx5ZRDigJF2Qhc=",
             "dev": true
         },
-        "ms": {
-            "version": "2.1.1",
-            "resolved": "https://nexus.solutions.consensys-uk.net/repository/komgo-npm-group/ms/-/ms-2.1.1.tgz",
-            "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg=="
-        },
         "punycode": {
             "version": "1.3.2",
             "resolved": "https://nexus.solutions.consensys-uk.net/repository/komgo-npm-group/punycode/-/punycode-1.3.2.tgz",