diff --git a/package.json b/package.json
index 0b44aa11..a20a9599 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "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": "^1.7.4",
diff --git a/samples/package.json b/samples/package.json
index 43f7060e..a9184bc8 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -20,7 +20,7 @@
   "devDependencies": {
     "chai": "^4.2.0",
     "execa": "^1.0.0",
-    "mocha": "^5.0.0",
+    "mocha": "^6.0.0",
     "p-retry": "^3.0.0",
     "uuid": "^3.3.2"
   }