diff --git a/package.json b/package.json
index 2c47a1a82..28af07d8d 100644
--- a/package.json
+++ b/package.json
@@ -91,7 +91,7 @@
     "jsdoc-baseline": "git+https://github.com/hegemonic/jsdoc-baseline.git",
     "intelli-espower-loader": "^1.0.1",
     "jsdoc": "^3.5.5",
-    "mocha": "^5.0.0",
+    "mocha": "^6.0.0",
     "nyc": "^13.0.0",
     "power-assert": "^1.4.4",
     "prettier": "^1.9.1",
diff --git a/samples/package.json b/samples/package.json
index 34c7f7db1..48b6ba25e 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -20,7 +20,7 @@
   "devDependencies": {
     "chai": "^4.2.0",
     "execa": "^1.0.0",
-    "mocha": "^5.2.0",
+    "mocha": "^6.0.0",
     "uuid": "^3.1.0"
   }
 }