diff --git a/package.json b/package.json
index 6d9807b..65d157c 100644
--- a/package.json
+++ b/package.json
@@ -90,7 +90,7 @@
     "nyc": "11.3.0",
     "opn-cli": "^3.1.0",
     "rimraf": "^2.6.2",
-    "sinon": "4.1.1",
+    "sinon": "4.5.0",
     "sleep-ms": "^2.0.1",
     "ts-node": "3.3.0",
     "tslint": "^5.8.0",
diff --git a/yarn.lock b/yarn.lock
index 6ce6648..b0c6c32 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -44,6 +44,13 @@
   dependencies:
     arrify "^1.0.1"
 
+"@sinonjs/formatio@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-2.0.0.tgz#84db7e9eb5531df18a8c5e0bfb6e449e55e654b2"
+  integrity sha512-ls6CAMA6/5gG+O/IdsBcblvnd8qcO/l1TYoNeAzp3wcISOxlPXQEus0mLcdwazEkWjaBdaJ3TaxmNgCLWwvWzg==
+  dependencies:
+    samsam "1.3.0"
+
 "@types/node@^8.0.47":
   version "8.0.47"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-8.0.47.tgz#968e596f91acd59069054558a00708c445ca30c2"
@@ -1391,7 +1398,7 @@ form-data@~2.1.1:
     combined-stream "^1.0.5"
     mime-types "^2.1.12"
 
-formatio@1.2.0, formatio@^1.2.0:
+formatio@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/formatio/-/formatio-1.2.0.tgz#f3b2167d9068c4698a8d51f4f760a39a54d818eb"
   dependencies:
@@ -1581,6 +1588,11 @@ has-flag@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-2.0.0.tgz#e8207af1cc7b30d446cc70b734b5e8be18f88d51"
 
+has-flag@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
+  integrity sha1-tdRU3CGZriJWmfNGfloH87lVuv0=
+
 has-unicode@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/has-unicode/-/has-unicode-2.0.1.tgz#e0e6fe6a28cf51138855e086d1691e771de2a8b9"
@@ -2158,9 +2170,10 @@ lolex@^1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/lolex/-/lolex-1.6.0.tgz#3a9a0283452a47d7439e72731b9e07d7386e49f6"
 
-lolex@^2.1.3:
-  version "2.1.3"
-  resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.1.3.tgz#53f893bbe88c80378156240e127126b905c83087"
+lolex@^2.2.0:
+  version "2.7.5"
+  resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.7.5.tgz#113001d56bfc7e02d56e36291cc5c413d1aa0733"
+  integrity sha512-l9x0+1offnKKIzYVjyXU2SiwhXDLekRzKyhnbyldPHvC7BvLPVpdNUNR2KeMAiCN2D/kLNttZgQD5WjSxuBx3Q==
 
 longest@^1.0.1:
   version "1.0.1"
@@ -2993,7 +3006,7 @@ safe-buffer@^5.0.1, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
-samsam@1.x:
+samsam@1.3.0, samsam@1.x:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/samsam/-/samsam-1.3.0.tgz#8d1d9350e25622da30de3e44ba692b5221ab7c50"
 
@@ -3029,17 +3042,18 @@ signal-exit@^3.0.0, signal-exit@^3.0.1, signal-exit@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
 
-sinon@4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/sinon/-/sinon-4.1.1.tgz#bd657be815df608887fe1f0b75f9590ec563748a"
+sinon@4.5.0:
+  version "4.5.0"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-4.5.0.tgz#427ae312a337d3c516804ce2754e8c0d5028cb04"
+  integrity sha512-trdx+mB0VBBgoYucy6a9L7/jfQOmvGeaKZT4OOJ+lPAtI8623xyGr8wLiE4eojzBS8G9yXbhx42GHUOVLr4X2w==
   dependencies:
+    "@sinonjs/formatio" "^2.0.0"
     diff "^3.1.0"
-    formatio "1.2.0"
     lodash.get "^4.4.2"
-    lolex "^2.1.3"
+    lolex "^2.2.0"
     nise "^1.2.0"
-    supports-color "^4.4.0"
-    type-detect "^4.0.0"
+    supports-color "^5.1.0"
+    type-detect "^4.0.5"
 
 slash@^1.0.0:
   version "1.0.0"
@@ -3251,12 +3265,19 @@ supports-color@^3.1.2, supports-color@^3.2.3:
   dependencies:
     has-flag "^1.0.0"
 
-supports-color@^4.0.0, supports-color@^4.4.0:
+supports-color@^4.0.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-4.5.0.tgz#be7a0de484dec5c5cddf8b3d59125044912f635b"
   dependencies:
     has-flag "^2.0.0"
 
+supports-color@^5.1.0:
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
+  integrity sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==
+  dependencies:
+    has-flag "^3.0.0"
+
 symbol-observable@^0.2.2:
   version "0.2.4"
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-0.2.4.tgz#95a83db26186d6af7e7a18dbd9760a2f86d08f40"
@@ -3457,9 +3478,10 @@ tweetnacl@^0.14.3, tweetnacl@~0.14.0:
   version "0.14.5"
   resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
 
-type-detect@^4.0.0:
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.3.tgz#0e3f2670b44099b0b46c284d136a7ef49c74c2ea"
+type-detect@^4.0.5:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
+  integrity sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==
 
 typescript@2.6.1:
   version "2.6.1"