diff --git a/package-lock.json b/package-lock.json
index ee2122bd..eb5aaae3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,14 +4,6 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
-    "@sinonjs/formatio": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-2.0.0.tgz",
-      "integrity": "sha512-ls6CAMA6/5gG+O/IdsBcblvnd8qcO/l1TYoNeAzp3wcISOxlPXQEus0mLcdwazEkWjaBdaJ3TaxmNgCLWwvWzg==",
-      "requires": {
-        "samsam": "1.3.0"
-      }
-    },
     "@types/chai": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.1.2.tgz",
@@ -29,9 +21,9 @@
       "integrity": "sha1-fyrX7FX5FEgvybHsS7GuYCjUYGY="
     },
     "@types/mocha": {
-      "version": "2.2.48",
-      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-2.2.48.tgz",
-      "integrity": "sha512-nlK/iyETgafGli8Zh9zJVCTicvU3iajSkRwOh3Hhiva598CMqNJ4NcVCGMTGKpGpTYj/9R8RLzS9NAykSSCqGw==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-5.0.0.tgz",
+      "integrity": "sha512-ZS0vBV7Jn5Z/Q4T3VXauEKMDCV8nWOtJJg90OsDylkYJiQwcWtKuLzohWzrthBkerUF7DLMmJcwOPEP0i/AOXw==",
       "dev": true
     },
     "@types/rimraf": {
@@ -8114,32 +8106,17 @@
       "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0="
     },
     "sinon": {
-      "version": "4.4.6",
-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-4.4.6.tgz",
-      "integrity": "sha512-bzQag30yErCC4lJPv+C2HcmD1+3ula4JQNePZldKcagi0Exq6XDfcC2yqXVfEwtfTIq1rYGujrUIZbwHPpKjog==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-5.0.0.tgz",
+      "integrity": "sha512-dMX7ZB2E1iQ5DOEOePoNJQp03uyhdMfb+kLXlNPbquv2FwfezD+0GbbHSgCw4MFhpSSS9NMoYJfOPMjCMJtXWA==",
       "requires": {
-        "@sinonjs/formatio": "2.0.0",
         "diff": "3.3.1",
+        "formatio": "1.2.0",
         "lodash.get": "4.4.2",
         "lolex": "2.3.0",
         "nise": "1.2.0",
-        "supports-color": "5.3.0",
+        "supports-color": "4.4.0",
         "type-detect": "4.0.5"
-      },
-      "dependencies": {
-        "has-flag": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
-          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
-        },
-        "supports-color": {
-          "version": "5.3.0",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.3.0.tgz",
-          "integrity": "sha512-0aP01LLIskjKs3lq52EC0aGBAJhLq7B2Rd8HC/DR/PtNNpcLilNmHC12O+hu0usQpo7wtHNRqtrhBwtDb0+dNg==",
-          "requires": {
-            "has-flag": "3.0.0"
-          }
-        }
       }
     },
     "sinon-chai": {
diff --git a/package.json b/package.json
index be24489e..fe7ab13d 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "moment": "2.21.0",
     "nyc": "11.6.0",
     "precinct": "4.0.0",
-    "sinon": "4.4.6",
+    "sinon": "5.0.0",
     "sinon-chai": "3.0.0",
     "source-map-support": "0.5.4",
     "test-exclude": "4.2.1",
@@ -56,7 +56,7 @@
   },
   "devDependencies": {
     "@types/chai": "4.1.2",
-    "@types/mocha": "2.2.48",
+    "@types/mocha": "5.0.0",
     "babel-core": "6.26.0",
     "babel-plugin-istanbul": "4.1.5",
     "babel-preset-env": "1.6.1",