diff --git a/package.json b/package.json
index a9adb76..741a931 100644
--- a/package.json
+++ b/package.json
@@ -48,6 +48,7 @@
     "chromedriver": "^2.33.2",
     "connect-history-api-fallback": "^1.5.0",
     "copy-webpack-plugin": "^4.0.1",
+    "coveralls": "^3.0.0",
     "cross-env": "^5.1.1",
     "cross-spawn": "^5.0.1",
     "css-loader": "^0.26.1",
diff --git a/yarn.lock b/yarn.lock
index 2781d54..05327c1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1591,6 +1591,16 @@ cosmiconfig@^2.1.0, cosmiconfig@^2.1.1:
     parse-json "^2.2.0"
     require-from-string "^1.1.0"
 
+coveralls@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/coveralls/-/coveralls-3.0.0.tgz#22ef730330538080d29b8c151dc9146afde88a99"
+  dependencies:
+    js-yaml "^3.6.1"
+    lcov-parse "^0.0.10"
+    log-driver "^1.2.5"
+    minimist "^1.2.0"
+    request "^2.79.0"
+
 create-ecdh@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/create-ecdh/-/create-ecdh-4.0.0.tgz#888c723596cdf7612f6498233eebd7a35301737d"
@@ -3522,6 +3532,13 @@ js-yaml@3.x, js-yaml@^3.4.3, js-yaml@^3.5.1:
     argparse "^1.0.7"
     esprima "^4.0.0"
 
+js-yaml@^3.6.1:
+  version "3.10.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.10.0.tgz#2e78441646bd4682e963f22b6e92823c309c62dc"
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^4.0.0"
+
 js-yaml@~3.7.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.7.0.tgz#5c967ddd837a9bfdca5f2de84253abe8a1c03b80"
@@ -3738,6 +3755,10 @@ lcid@^1.0.0:
   dependencies:
     invert-kv "^1.0.0"
 
+lcov-parse@^0.0.10:
+  version "0.0.10"
+  resolved "https://registry.yarnpkg.com/lcov-parse/-/lcov-parse-0.0.10.tgz#1b0b8ff9ac9c7889250582b70b71315d9da6d9a3"
+
 levn@^0.3.0, levn@~0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/levn/-/levn-0.3.0.tgz#3b09924edf9f083c0490fdd4c0bc4421e04764ee"
@@ -3943,6 +3964,10 @@ lodash@^4.0.0, lodash@^4.0.1, lodash@^4.14.0, lodash@^4.17.2, lodash@^4.17.3, lo
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
+log-driver@^1.2.5:
+  version "1.2.5"
+  resolved "https://registry.yarnpkg.com/log-driver/-/log-driver-1.2.5.tgz#7ae4ec257302fd790d557cb10c97100d857b0056"
+
 log-symbols@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/log-symbols/-/log-symbols-1.0.2.tgz#376ff7b58ea3086a0f09facc74617eca501e1a18"
@@ -5403,7 +5428,7 @@ request@2, request@^2.81.0, request@~2.81.0:
     tunnel-agent "^0.6.0"
     uuid "^3.0.0"
 
-request@^2.83.0:
+request@^2.79.0, request@^2.83.0:
   version "2.83.0"
   resolved "https://registry.yarnpkg.com/request/-/request-2.83.0.tgz#ca0b65da02ed62935887808e6f510381034e3356"
   dependencies: