diff --git a/package.json b/package.json
index ae58598d..e22d97a0 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": "6.3.3",
+    "sinon": "6.3.4",
     "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 d9907ae1..6e6551f1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -690,12 +690,18 @@
   dependencies:
     "@sinonjs/samsam" "2.1.0"
 
-"@sinonjs/samsam@2.1.0", "@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"
 
+"@sinonjs/samsam@^2.1.1":
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-2.1.1.tgz#f352621c24c9e9ab2ed293a7655e8d46bfd64c16"
+  dependencies:
+    array-from "^2.1.1"
+
 "@webassemblyjs/ast@1.7.6":
   version "1.7.6"
   resolved "https://registry.yarnpkg.com/@webassemblyjs/ast/-/ast-1.7.6.tgz#3ef8c45b3e5e943a153a05281317474fef63e21e"
@@ -6724,13 +6730,13 @@ 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@6.3.3:
-  version "6.3.3"
-  resolved "https://registry.yarnpkg.com/sinon/-/sinon-6.3.3.tgz#c3a55b7046174c139e87a3c94c922cbf4323a4e7"
+sinon@6.3.4:
+  version "6.3.4"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-6.3.4.tgz#6f076d7ddcf381af6c16468ac83d30333a756ec8"
   dependencies:
     "@sinonjs/commons" "^1.0.2"
     "@sinonjs/formatio" "^3.0.0"
-    "@sinonjs/samsam" "^2.1.0"
+    "@sinonjs/samsam" "^2.1.1"
     diff "^3.5.0"
     lodash.get "^4.4.2"
     lolex "^2.7.4"