diff --git a/course-04/exercises/c4-demos-master/04-chaos-monkey/package-lock.json b/course-04/exercises/c4-demos-master/04-chaos-monkey/package-lock.json
old mode 100755
new mode 100644
index d52087a..9d01c5f
--- a/course-04/exercises/c4-demos-master/04-chaos-monkey/package-lock.json
+++ b/course-04/exercises/c4-demos-master/04-chaos-monkey/package-lock.json
@@ -63,9 +63,9 @@
       "dev": true
     },
     "lodash": {
-      "version": "4.17.11",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
-      "integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg=="
+      "version": "4.17.19",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
+      "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ=="
     },
     "punycode": {
       "version": "1.3.2",
diff --git a/course-04/exercises/c4-demos-master/04-chaos-monkey/package.json b/course-04/exercises/c4-demos-master/04-chaos-monkey/package.json
old mode 100755
new mode 100644
index e911328..b7e2f45
--- a/course-04/exercises/c4-demos-master/04-chaos-monkey/package.json
+++ b/course-04/exercises/c4-demos-master/04-chaos-monkey/package.json
@@ -10,7 +10,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "lodash": "^4.17.11"
+    "lodash": "^4.17.19"
   },
   "devDependencies": {
     "aws-sdk": "^2.432.0"