diff --git a/.gitignore b/.gitignore
index 2e7e36a1..bb57b9c2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ coverage/
 node_modules/
 npm-debug.log
 .eslint-release-info.json
+.nyc_output
diff --git a/package.json b/package.json
index 7895549b..691afdcd 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
   "scripts": {
     "lint": "eslint .",
     "test": "npm run lint && npm run test-cov",
-    "test-cov": "istanbul cover _mocha -- -c tests/lib/**/*.js",
+    "test-cov": "nyc _mocha -- -c tests/lib/**/*.js",
     "generate-release": "eslint-generate-release",
     "generate-alpharelease": "eslint-generate-prerelease alpha",
     "generate-betarelease": "eslint-generate-prerelease beta",
@@ -36,18 +36,18 @@
     "lib/processor.js"
   ],
   "devDependencies": {
-    "chai": "^3.0.0",
-    "eslint": "^4.19.1",
+    "chai": "^4.2.0",
+    "eslint": "^6.6.0",
     "eslint-config-eslint": "^5.0.1",
     "eslint-plugin-node": "^6.0.1",
-    "eslint-release": "^1.0.0",
-    "istanbul": "^0.4.5",
-    "mocha": "^2.2.5"
+    "eslint-release": "^1.2.0",
+    "mocha": "^6.2.2",
+    "nyc": "^14.1.1"
   },
   "dependencies": {
-    "object-assign": "^4.0.1",
-    "remark-parse": "^5.0.0",
-    "unified": "^6.1.2"
+    "object-assign": "^4.1.1",
+    "remark-parse": "^7.0.1",
+    "unified": "^8.4.1"
   },
   "engines": {
     "node": "^6.14.0 || ^8.10.0 || >=9.10.0"
diff --git a/tests/lib/plugin.js b/tests/lib/plugin.js
index 6fb03b94..f8e04d7d 100644
--- a/tests/lib/plugin.js
+++ b/tests/lib/plugin.js
@@ -20,6 +20,7 @@ function initCLI(isAutofixEnabled) {
     const cli = new CLIEngine({
         envs: ["browser"],
         extensions: ["md", "mkdn", "mdown", "markdown"],
+        plugins: ["markdown"],
         fix,
         ignore: false,
         rules: {
diff --git a/tests/lib/processor.js b/tests/lib/processor.js
index 0cd7a121..8ebf7134 100644
--- a/tests/lib/processor.js
+++ b/tests/lib/processor.js
@@ -188,7 +188,7 @@ describe("processor", () => {
             const blocks = processor.preprocess(code);
 
             assert.strictEqual(blocks.length, 1);
-            assert.strictEqual(blocks[0], "\n\n \n  \n");
+            assert.strictEqual(blocks[0], "\n\n\n \n  \n");
         });
 
         it("should ignore code fences with unspecified info string", () => {