diff --git a/package-lock.json b/package-lock.json
index 4cbe9ea..4531f72 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,9 +15,9 @@
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@@ -127,9 +127,9 @@
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@@ -189,9 +189,9 @@
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@@ -268,6 +268,15 @@
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@@ -286,53 +295,36 @@
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-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-4.0.1.tgz",
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+        "browser-stdout": "1.3.1",
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-        "diff": "3.3.1",
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@@ -433,6 +425,14 @@
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+        }
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@@ -446,12 +446,21 @@
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         "minimist": "^1.2.0",
         "strip-bom": "^3.0.0"
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diff --git a/package.json b/package.json
index cfdac2b..83d9ff2 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
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     "@types/express": "~4.16.1",
     "chai": "~4.2.0",
-    "mocha": "~4.0.0",
+    "mocha": "~5.0.0",
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     "rxjs-compat": "~6.2.2",
     "ts-mocha": "~6.0.0",