diff --git a/package.json b/package.json
index cbbcb170..8eae6c79 100644
--- a/package.json
+++ b/package.json
@@ -89,7 +89,7 @@
     "json-loader": "0.5.7",
     "karma": "6.4.2",
     "karma-coverage": "2.2.0",
-    "karma-firefox-launcher": "2.1.2",
+    "karma-firefox-launcher": "2.1.3",
     "karma-mocha": "2.0.1",
     "karma-mocha-reporter": "2.2.5",
     "karma-sinon-chai": "2.0.2",
diff --git a/yarn.lock b/yarn.lock
index c42fe8fa..14c0316b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5966,13 +5966,13 @@ karma-coverage@2.2.0:
     istanbul-reports "^3.0.5"
     minimatch "^3.0.4"
 
-karma-firefox-launcher@2.1.2:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/karma-firefox-launcher/-/karma-firefox-launcher-2.1.2.tgz#9a38cc783c579a50f3ed2a82b7386186385cfc2d"
-  integrity sha512-VV9xDQU1QIboTrjtGVD4NCfzIH7n01ZXqy/qpBhnOeGVOkG5JYPEm8kuSd7psHE6WouZaQ9Ool92g8LFweSNMA==
+karma-firefox-launcher@2.1.3:
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/karma-firefox-launcher/-/karma-firefox-launcher-2.1.3.tgz#b278a4cbffa92ab81394b1a398813847b0624a85"
+  integrity sha512-LMM2bseebLbYjODBOVt7TCPP9OI2vZIXCavIXhkO9m+10Uj5l7u/SKoeRmYx8FYHTVGZSpk6peX+3BMHC1WwNw==
   dependencies:
     is-wsl "^2.2.0"
-    which "^2.0.1"
+    which "^3.0.0"
 
 karma-mocha-reporter@2.2.5:
   version "2.2.5"
@@ -9417,6 +9417,13 @@ which@^1.3.1:
   dependencies:
     isexe "^2.0.0"
 
+which@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/which/-/which-3.0.1.tgz#89f1cd0c23f629a8105ffe69b8172791c87b4be1"
+  integrity sha512-XA1b62dzQzLfaEOSQFTCOd5KFf/1VSzZo7/7TUjnya6u0vGGKzU96UQBZTAThCb2j4/xjBAyii1OhRLJEivHvg==
+  dependencies:
+    isexe "^2.0.0"
+
 widest-line@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/widest-line/-/widest-line-3.1.0.tgz#8292333bbf66cb45ff0de1603b136b7ae1496eca"