diff --git a/package.json b/package.json
index d122a2e8..c6507527 100644
--- a/package.json
+++ b/package.json
@@ -88,7 +88,7 @@
     "mousetrap": "1.6.1",
     "npm-run-all": "4.1.2",
     "nyc": "11.6.0",
-    "sinon": "4.4.8",
+    "sinon": "4.5.0",
     "socket.io-client": "2.1.0",
     "stylelint": "9.2.0",
     "stylelint-config-standard": "18.2.0",
diff --git a/yarn.lock b/yarn.lock
index a121a18d..372d648d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6304,9 +6304,9 @@ 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@4.4.8:
-  version "4.4.8"
-  resolved "https://registry.yarnpkg.com/sinon/-/sinon-4.4.8.tgz#0479e0ccb8caa0d737ce9773c8d53d57d38f2d84"
+sinon@4.5.0:
+  version "4.5.0"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-4.5.0.tgz#427ae312a337d3c516804ce2754e8c0d5028cb04"
   dependencies:
     "@sinonjs/formatio" "^2.0.0"
     diff "^3.1.0"