diff --git a/package.json b/package.json
index 50033cca..423d82a2 100644
--- a/package.json
+++ b/package.json
@@ -99,7 +99,7 @@
     "mousetrap": "1.6.2",
     "npm-run-all": "4.1.3",
     "nyc": "13.0.1",
-    "sinon": "6.3.1",
+    "sinon": "6.3.3",
     "socket.io-client": "2.1.1",
     "stylelint": "9.5.0",
     "stylelint-config-standard": "18.2.0",
diff --git a/yarn.lock b/yarn.lock
index c4d3d624..e776d112 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -642,15 +642,17 @@
   dependencies:
     type-detect "4.0.8"
 
-"@sinonjs/formatio@^2.0.0":
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-2.0.0.tgz#84db7e9eb5531df18a8c5e0bfb6e449e55e654b2"
+"@sinonjs/formatio@3.0.0", "@sinonjs/formatio@^3.0.0":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-3.0.0.tgz#9d282d81030a03a03fa0c5ce31fd8786a4da311a"
   dependencies:
-    samsam "1.3.0"
+    "@sinonjs/samsam" "2.1.0"
 
-"@sinonjs/samsam@^2.0.0":
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-2.0.0.tgz#9163742ac35c12d3602dece74317643b35db6a80"
+"@sinonjs/samsam@2.1.0", "@sinonjs/samsam@^2.1.0":
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-2.1.0.tgz#b8b8f5b819605bd63601a6ede459156880f38ea3"
+  dependencies:
+    array-from "^2.1.1"
 
 "@webassemblyjs/ast@1.7.6":
   version "1.7.6"
@@ -970,6 +972,10 @@ array-flatten@^2.1.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/array-flatten/-/array-flatten-2.1.1.tgz#426bb9da84090c1838d812c8150af20a8331e296"
 
+array-from@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/array-from/-/array-from-2.1.1.tgz#cfe9d8c26628b9dc5aecc62a9f5d8f1f352c1195"
+
 array-map@~0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/array-map/-/array-map-0.0.0.tgz#88a2bab73d1cf7bcd5c1b118a003f66f665fa662"
@@ -4975,11 +4981,11 @@ nice-try@^1.0.4:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
 
-nise@^1.4.4:
-  version "1.4.4"
-  resolved "https://registry.yarnpkg.com/nise/-/nise-1.4.4.tgz#b8d9dd35334c99e514b75e46fcc38e358caecdd0"
+nise@^1.4.5:
+  version "1.4.5"
+  resolved "https://registry.yarnpkg.com/nise/-/nise-1.4.5.tgz#979a97a19c48d627bb53703726ae8d53ce8d4b3e"
   dependencies:
-    "@sinonjs/formatio" "^2.0.0"
+    "@sinonjs/formatio" "3.0.0"
     just-extend "^3.0.0"
     lolex "^2.3.2"
     path-to-regexp "^1.7.0"
@@ -6520,10 +6526,6 @@ safe-regex@^1.1.0:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
 
-samsam@1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/samsam/-/samsam-1.3.0.tgz#8d1d9350e25622da30de3e44ba692b5221ab7c50"
-
 sax@^1.2.4, sax@~1.2.1:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
@@ -6680,17 +6682,17 @@ signal-exit@^3.0.0, signal-exit@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
 
-sinon@6.3.1:
-  version "6.3.1"
-  resolved "https://registry.yarnpkg.com/sinon/-/sinon-6.3.1.tgz#4b57a52d74d6cc2fb8db17cb3b23356becfa7c1b"
+sinon@6.3.3:
+  version "6.3.3"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-6.3.3.tgz#c3a55b7046174c139e87a3c94c922cbf4323a4e7"
   dependencies:
     "@sinonjs/commons" "^1.0.2"
-    "@sinonjs/formatio" "^2.0.0"
-    "@sinonjs/samsam" "^2.0.0"
+    "@sinonjs/formatio" "^3.0.0"
+    "@sinonjs/samsam" "^2.1.0"
     diff "^3.5.0"
     lodash.get "^4.4.2"
     lolex "^2.7.4"
-    nise "^1.4.4"
+    nise "^1.4.5"
     supports-color "^5.5.0"
     type-detect "^4.0.8"