diff --git a/.travis.yml b/.travis.yml
index 0a0acee..2f442b8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,5 +25,5 @@ addons:
     token: "${SONAR_TOKEN}"
 script:
   - npm run test
-  - sonar-scanner
+  - if [ "$TRAVIS_PULL_REQUEST" = "false" ]; then sonar-scanner; fi # sonar only on non-PRs
   - npm run stryker
\ No newline at end of file
diff --git a/README.md b/README.md
index 76d9c96..2466b0c 100755
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@
 [![Code Coverage](https://sonarcloud.io/api/project_badges/measure?project=com.zanclus%3Anpm-audit-ci-wrapper&metric=coverage)](https://sonarcloud.io/dashboard?id=com.zanclus%3Anpm-audit-ci-wrapper)
 [![Bugs](https://sonarcloud.io/api/project_badges/measure?project=com.zanclus%3Anpm-audit-ci-wrapper&metric=bugs)](https://sonarcloud.io/dashboard?id=com.zanclus%3Anpm-audit-ci-wrapper)
 [![Quality](https://sonarcloud.io/api/project_badges/measure?project=com.zanclus%3Anpm-audit-ci-wrapper&metric=sqale_index)](https://sonarcloud.io/dashboard?id=com.zanclus%3Anpm-audit-ci-wrapper)
+[![Known Vulnerabilities](https://snyk.io/test/github/InfoSec812/npm-audit-ci-wrapper/badge.svg?targetFile=package.json)](https://snyk.io/test/github/InfoSec812/npm-audit-ci-wrapper?targetFile=package.json)
 
 This utility is a wrapper around `npm audit --json` which allows for finer grained control over what
 will cause a CI build to fail. Options include setting the severity threshold and ignoring dev dependencies.
diff --git a/bin/index.js b/bin/index.js
index 9c093db..d35f915 100755
--- a/bin/index.js
+++ b/bin/index.js
@@ -27,6 +27,11 @@ if (!check_npm_version()) {
   process.exit(1);
 }
 
+if (threshold === -1) {
+  console.error(`Invalid threshold provided. Threshold must be one of the following: ${validThresholds.join(', ')}`);
+  process.exit(1);
+}
+
 // Build the npm audit command
 command = 'npm audit --json'
 if( registry !== null ) {
diff --git a/lib/parse_args.js b/lib/parse_args.js
index 69eda46..0cf15ba 100644
--- a/lib/parse_args.js
+++ b/lib/parse_args.js
@@ -89,10 +89,7 @@ function parse_args(cli_args) {
   // Define which threshold this script should cause a non-zero exit status
   let threshold = validThresholds.indexOf('critical');
 
-  if (
-        args.options.hasOwnProperty('threshold') &&
-        validThresholds.indexOf(args.options.threshold.toLocaleLowerCase()) > -1
-      ) {
+  if (args.options.hasOwnProperty('threshold')) {
     threshold = validThresholds.indexOf(args.options.threshold.toLocaleLowerCase()); // Set the threshold
   }
 
diff --git a/lib/parse_args.test.js b/lib/parse_args.test.js
index 47c799e..6aab514 100644
--- a/lib/parse_args.test.js
+++ b/lib/parse_args.test.js
@@ -40,7 +40,7 @@ test('Validate help output', async () => {
 test('Test undefined threshold', () => {
   const argv = ['-t', 'undef'];
   const { threshold } = parse_args(argv);
-  expect(threshold).toBe(validThresholds.indexOf('critical'));
+  expect(threshold).toBe(-1);
 });
 
 test('Test with MODERATE threshold', () => {
diff --git a/lib/parser.js b/lib/parser.js
index 827437b..3f4a679 100644
--- a/lib/parser.js
+++ b/lib/parser.js
@@ -27,20 +27,27 @@ const { validThresholds } = require('./parse_args');
 function parse_audit_results(err, stdout, threshold, ignoreDev, json_output = false, whitelist = []) {
   let exitCode = 0;
   let cli_output = "";
+  const data = JSON.parse(stdout);
   if (err === null) {
-    cli_output += 'No vulnerabilities found.\n';
+    if (json_output) {
+      data['advisories'] = {};
+      data['actions'] = [];
+      data['muted'] = [];
+      cli_output = JSON.stringify(data, null, 2) + "\n";
+    } else {
+      cli_output += 'No vulnerabilities found.\n';
+    }
   } else {
-    let data = JSON.parse(stdout);
     let advisories = Object.entries(data.advisories);
 
     let flaggedDepenencies = filter_advisories(advisories, ignoreDev, threshold, whitelist);
 
     // If `-j` or `--json` passed, return the json data with the appropriate filters applied
     if (json_output) {
-      var retVal = data;
+      var retVal = JSON.parse(JSON.stringify(data));
       retVal.advisories = {};
       retVal.advisories = flaggedDepenencies;
-      cli_output = JSON.stringify(retVal) + '\n';
+      cli_output = JSON.stringify(retVal, null, 2) + '\n';
     } else { // If any vulnerabilities exceed the threshold and are not filtered, print the details and fail the build.
       if (flaggedDepenencies.length > 0) {
         cli_output += 'There are vulnerable dependencies which exceed the selected threshold and scope:\n';
diff --git a/lib/parser.test.js b/lib/parser.test.js
index 443469d..8e9e1d9 100644
--- a/lib/parser.test.js
+++ b/lib/parser.test.js
@@ -32,6 +32,48 @@ test('Validate when err is NULL', () => {
   expect(exitCode).toBe(0);
 });
 
+/*
+ * When err is NULL, and JSON is requested, expect default JSON output as well
+ */
+test('Validate when err is NULL and JSON output is desired', () => {
+  const test_data = readFileSync('test_data/zero_vulnerabilities.json', 'utf8');
+  let { exitCode, cli_output } = parse_audit_results(null, test_data, LOW_THRESHOLD, false, true);
+  const expectedOutput = {
+    "actions": [],
+    "advisories": {},
+    "muted": [],
+    "metadata": {
+      "vulnerabilities": {
+        "info": 0,
+        "low": 0,
+        "moderate": 0,
+        "high": 0,
+        "critical": 0
+      },
+      "dependencies": 879278,
+      "devDependencies": 387,
+      "optionalDependencies": 9709,
+      "totalDependencies": 889374
+    },
+    "runId": "3fdcb3d6-c9f3-4e6f-9e4f-c77d1e0dac86"
+  }
+  const actualObject = JSON.parse(cli_output);
+  expect(actualObject.actions).toEqual([]);
+  expect(actualObject.advisories).toEqual({});
+  expect(actualObject.muted).toEqual([]);
+  expect(actualObject.metadata.vulnerabilities.info).toEqual(0);
+  expect(actualObject.metadata.vulnerabilities.low).toEqual(0);
+  expect(actualObject.metadata.vulnerabilities.moderate).toEqual(0);
+  expect(actualObject.metadata.vulnerabilities.high).toEqual(0);
+  expect(actualObject.metadata.vulnerabilities.critical).toEqual(0);
+  expect(actualObject.metadata.dependencies).toBeDefined();
+  expect(actualObject.metadata.devDependencies).toBeDefined();
+  expect(actualObject.metadata.optionalDependencies).toBeDefined();
+  expect(actualObject.metadata.totalDependencies).toBeDefined();
+  expect(actualObject.runId).toBeDefined();
+  expect(exitCode).toBe(0);
+});
+
 /*
  * When there are 0 vulnerable dependencies, expect a 0 exit code
  */
@@ -61,10 +103,17 @@ test('Validate run with 7 vulnerabilities', () => {
 test('Validate run with 7 vulnerabilities and JSON output', () => {
   const test_data = readFileSync('test_data/vue_js_app.json', 'utf8');
   let { exitCode, cli_output } = parse_audit_results("", test_data, LOW_THRESHOLD, true, true);
+  const actualObject = JSON.parse(cli_output);
+  console.log(cli_output+"\n\n");
   expect(cli_output).toContain('"https-proxy-agent"');
   expect(cli_output).toContain('"version"');
   expect(cli_output).toContain('"module_name"');
   expect(cli_output.substring((cli_output.length - 1), cli_output.length)).toBe('\n');
+  expect(actualObject.metadata.dependencies).toBeDefined();
+  expect(actualObject.metadata.devDependencies).toBeDefined();
+  expect(actualObject.metadata.optionalDependencies).toBeDefined();
+  expect(actualObject.metadata.totalDependencies).toBeDefined();
+  expect(actualObject.runId).toBeDefined();
   expect(exitCode).toBe(0);
 });
 
diff --git a/package.json b/package.json
index 62e76d8..54f395a 100755
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "npm-audit-ci-wrapper",
-  "version": "2.1.8",
+  "version": "2.2.1",
   "description": "A wrapper for 'npm audit' which can be configurable for use in a CI/CD tool like Jenkins",
   "keywords": [
     "npm",
@@ -36,6 +36,7 @@
     "@stryker-mutator/jest-runner": "^1.0.2",
     "capture-stdout": "^1.0.0",
     "jest": "^24.1.0",
+    "jest-cli": "^24.8.0",
     "jest-html-reporter": "^2.5.0",
     "stryker-cli": "^1.0.0",
     "stryker-jest-runner": "^1.4.1"
diff --git a/test_data/vue_js_app.json b/test_data/vue_js_app.json
index a73d7bd..5ea811a 100644
--- a/test_data/vue_js_app.json
+++ b/test_data/vue_js_app.json
@@ -312,5 +312,20 @@
       },
       "url": "https://npmjs.com/advisories/755"
     }
-  }
+  },
+  "muted": [],
+  "metadata": {
+    "vulnerabilities": {
+      "info": 0,
+      "low": 0,
+      "moderate": 0,
+      "high": 0,
+      "critical": 0
+    },
+    "dependencies": 1,
+    "devDependencies": 74642,
+    "optionalDependencies": 396,
+    "totalDependencies": 74643
+  },
+  "runId": "13b24789-ae58-468a-83ff-7eb3faafa8ae"
 }
\ No newline at end of file