diff --git a/package.json b/package.json
index b7daa6d..0ad6379 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "readline": "^1.3.0"
   },
   "devDependencies": {
-    "coveralls": "^3.1.0",
+    "coveralls": "^3.1.1",
     "eslint": "^4.9.0",
     "husky": "^0.14.3",
     "istanbul": "^0.4.5",
diff --git a/yarn.lock b/yarn.lock
index c771f64..88b6ba5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -286,9 +286,9 @@ core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
 
-coveralls@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/coveralls/-/coveralls-3.1.0.tgz#13c754d5e7a2dd8b44fe5269e21ca394fb4d615b"
+coveralls@^3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/coveralls/-/coveralls-3.1.1.tgz#f5d4431d8b5ae69c5079c8f8ca00d64ac77cf081"
   dependencies:
     js-yaml "^3.13.1"
     lcov-parse "^1.0.0"