diff --git a/package.json b/package.json
index 1bb9dd6..b1fe8e6 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
   },
   "devDependencies": {
     "chai": "4.3.4",
-    "coveralls": "3.1.0",
+    "coveralls": "3.1.1",
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.15.0",
     "eslint-plugin-chai-expect": "2.2.0",
diff --git a/yarn.lock b/yarn.lock
index 5815dc2..cf45523 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -440,9 +440,10 @@ core-util-is@1.0.2:
   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"
+  integrity sha512-+dxnG2NHncSD1NrqbSM3dn/lE57O6Qf/koe9+I7c+wzkqRmEvcp0kgJdxKInzYzkICKkFMZsX3Vct3++tsF9ww==
   dependencies:
     js-yaml "^3.13.1"
     lcov-parse "^1.0.0"