diff --git a/package.json b/package.json
index 5f7eac8..8cbd3ad 100644
--- a/package.json
+++ b/package.json
@@ -80,7 +80,7 @@
     "karma": "^5.2.3",
     "karma-chrome-launcher": "^3.1.0",
     "karma-coverage": "^2.0.3",
-    "karma-firefox-launcher": "^1.3.0",
+    "karma-firefox-launcher": "^2.0.0",
     "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 4e5dbb1..0b2c7bf 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4254,6 +4254,11 @@ is-descriptor@^1.0.0, is-descriptor@^1.0.2:
     is-data-descriptor "^1.0.0"
     kind-of "^6.0.2"
 
+is-docker@^2.0.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/is-docker/-/is-docker-2.1.1.tgz#4125a88e44e450d384e09047ede71adc2d144156"
+  integrity sha512-ZOoqiXfEwtGknTiuDEy8pN2CfE3TxMHprvNer1mXiqwkOT77Rw3YVrUQ52EqAOU3QAWDQ+bQdx7HJzrv7LS2Hw==
+
 is-extendable@^0.1.0, is-extendable@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/is-extendable/-/is-extendable-0.1.1.tgz#62b110e289a471418e3ec36a617d472e301dfc89"
@@ -4385,10 +4390,12 @@ is-wsl@^1.1.0:
   resolved "https://registry.yarnpkg.com/is-wsl/-/is-wsl-1.1.0.tgz#1f16e4aa22b04d1336b66188a66af3c600c3a66d"
   integrity sha1-HxbkqiKwTRM2tmGIpmrzxgDDpm0=
 
-is-wsl@^2.1.0:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/is-wsl/-/is-wsl-2.1.1.tgz#4a1c152d429df3d441669498e2486d3596ebaf1d"
-  integrity sha512-umZHcSrwlDHo2TGMXv0DZ8dIUGunZ2Iv68YZnrmCiBPkZ4aaOhtv7pXJKeki9k3qJ3RJr0cDyitcl5wEH3AYog==
+is-wsl@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/is-wsl/-/is-wsl-2.2.0.tgz#74a4c76e77ca9fd3f932f290c17ea326cd157271"
+  integrity sha512-fKzAra0rGJUUBwGBgNkHZuToZcn+TtXHpeCgmkMJMMYx1sQDYaCSyjJBSCa2nH1DGm7s3n1oBnohoVTBaN7Lww==
+  dependencies:
+    is-docker "^2.0.0"
 
 isarray@0.0.1:
   version "0.0.1"
@@ -4615,12 +4622,13 @@ karma-coverage@^2.0.3:
     istanbul-reports "^3.0.0"
     minimatch "^3.0.4"
 
-karma-firefox-launcher@^1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/karma-firefox-launcher/-/karma-firefox-launcher-1.3.0.tgz#ebcbb1d1ddfada6be900eb8fae25bcf2dcdc8171"
-  integrity sha512-Fi7xPhwrRgr+94BnHX0F5dCl1miIW4RHnzjIGxF8GaIEp7rNqX7LSi7ok63VXs3PS/5MQaQMhGxw+bvD+pibBQ==
+karma-firefox-launcher@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/karma-firefox-launcher/-/karma-firefox-launcher-2.0.0.tgz#01319c50e452222311cfd92c06483ced6b934af9"
+  integrity sha512-BVq24Qwa//531LXRwvqu14ba04wcHNAX/m3lFF5v90w1rzUgck1FPBwQqlAIgKfkN5uHjT0PcxUqUNUctbQGVA==
   dependencies:
-    is-wsl "^2.1.0"
+    is-wsl "^2.2.0"
+    which "^2.0.1"
 
 karma-mocha-reporter@^2.2.5:
   version "2.2.5"