diff --git a/package.json b/package.json
index c2343c1..1bb8281 100644
--- a/package.json
+++ b/package.json
@@ -70,7 +70,7 @@
     "mocha": "^4.0.1",
     "nyc": "^11.4.1",
     "proxyquire": "^1.7.11",
-    "sinon": "^4.1.3"
+    "sinon": "^6.1.3"
   },
   "jest": {
     "testEnvironment": "node",
diff --git a/yarn.lock b/yarn.lock
index 535a64c..41d3e7f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -67,6 +67,16 @@
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/@sindresorhus/is/-/is-0.6.0.tgz#383f456b26bc96c7889f0332079f4358b16c58dc"
 
+"@sinonjs/formatio@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-2.0.0.tgz#84db7e9eb5531df18a8c5e0bfb6e449e55e654b2"
+  dependencies:
+    samsam "1.3.0"
+
+"@sinonjs/samsam@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-2.0.0.tgz#9163742ac35c12d3602dece74317643b35db6a80"
+
 "@types/node@*":
   version "8.5.1"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-8.5.1.tgz#4ec3020bcdfe2abffeef9ba3fbf26fca097514b5"
@@ -1294,10 +1304,14 @@ diff@3.3.1:
   version "3.3.1"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.3.1.tgz#aa8567a6eed03c531fc89d3f711cd0e5259dec75"
 
-diff@^3.1.0, diff@^3.2.0:
+diff@^3.2.0:
   version "3.4.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.4.0.tgz#b1d85507daf3964828de54b37d0d73ba67dda56c"
 
+diff@^3.5.0:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
+
 doctrine@1.5.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/doctrine/-/doctrine-1.5.0.tgz#379dce730f6166f76cefa4e6707a159b02c5a6fa"
@@ -1751,12 +1765,6 @@ form-data@~2.3.1:
     combined-stream "^1.0.5"
     mime-types "^2.1.12"
 
-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:
-    samsam "1.x"
-
 from2@^2.1.1:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/from2/-/from2-2.3.0.tgz#8bfb5502bde4a4d36cfdeea007fcca21d7e382af"
@@ -1978,6 +1986,10 @@ 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"
+
 has-symbol-support-x@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/has-symbol-support-x/-/has-symbol-support-x-1.4.1.tgz#66ec2e377e0c7d7ccedb07a3a84d77510ff1bc4c"
@@ -2794,7 +2806,7 @@ jsprim@^1.2.2:
     json-schema "0.2.3"
     verror "1.10.0"
 
-just-extend@^1.1.26:
+just-extend@^1.1.27:
   version "1.1.27"
   resolved "https://registry.yarnpkg.com/just-extend/-/just-extend-1.1.27.tgz#ec6e79410ff914e472652abfa0e603c03d60e905"
 
@@ -2979,13 +2991,9 @@ log-update@^1.0.2:
     ansi-escapes "^1.0.0"
     cli-cursor "^1.0.2"
 
-lolex@^1.6.0:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/lolex/-/lolex-1.6.0.tgz#3a9a0283452a47d7439e72731b9e07d7386e49f6"
-
-lolex@^2.2.0:
-  version "2.3.1"
-  resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.3.1.tgz#3d2319894471ea0950ef64692ead2a5318cff362"
+lolex@^2.3.2, lolex@^2.4.2:
+  version "2.7.1"
+  resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.7.1.tgz#e40a8c4d1f14b536aa03e42a537c7adbaf0c20be"
 
 longest@^1.0.1:
   version "1.0.1"
@@ -3145,13 +3153,13 @@ natural-compare@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
 
-nise@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/nise/-/nise-1.2.0.tgz#079d6cadbbcb12ba30e38f1c999f36ad4d6baa53"
+nise@^1.3.3:
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/nise/-/nise-1.4.2.tgz#a9a3800e3994994af9e452333d549d60f72b8e8c"
   dependencies:
-    formatio "^1.2.0"
-    just-extend "^1.1.26"
-    lolex "^1.6.0"
+    "@sinonjs/formatio" "^2.0.0"
+    just-extend "^1.1.27"
+    lolex "^2.3.2"
     path-to-regexp "^1.7.0"
     text-encoding "^0.6.4"
 
@@ -3920,7 +3928,7 @@ 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:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/samsam/-/samsam-1.3.0.tgz#8d1d9350e25622da30de3e44ba692b5221ab7c50"
 
@@ -3972,17 +3980,18 @@ 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@^4.1.3:
-  version "4.1.3"
-  resolved "https://registry.yarnpkg.com/sinon/-/sinon-4.1.3.tgz#fc599eda47ed9f1a694ce774b94ab44260bd7ac5"
+sinon@^6.1.3:
+  version "6.1.3"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-6.1.3.tgz#98e7d716b7b11f7f1200e9c997e74f50ae094660"
   dependencies:
-    diff "^3.1.0"
-    formatio "1.2.0"
+    "@sinonjs/formatio" "^2.0.0"
+    "@sinonjs/samsam" "^2.0.0"
+    diff "^3.5.0"
     lodash.get "^4.4.2"
-    lolex "^2.2.0"
-    nise "^1.2.0"
-    supports-color "^4.4.0"
-    type-detect "^4.0.5"
+    lolex "^2.4.2"
+    nise "^1.3.3"
+    supports-color "^5.4.0"
+    type-detect "^4.0.8"
 
 slash@^1.0.0:
   version "1.0.0"
@@ -4201,12 +4210,18 @@ supports-color@^3.1.2:
   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@^5.4.0:
+  version "5.4.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.4.0.tgz#1c6b337402c2137605efe19f10fec390f6faab54"
+  dependencies:
+    has-flag "^3.0.0"
+
 symbol-observable@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.0.1.tgz#8340fc4702c3122df5d22288f88283f513d3fdd4"
@@ -4331,9 +4346,9 @@ type-check@~0.3.2:
   dependencies:
     prelude-ls "~1.1.2"
 
-type-detect@^4.0.5:
-  version "4.0.5"
-  resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.5.tgz#d70e5bc81db6de2a381bcaca0c6e0cbdc7635de2"
+type-detect@^4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
 
 typedarray@^0.0.6:
   version "0.0.6"