diff --git a/package.json b/package.json
index f2e54da..66c6f5a 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "babel-preset-es2015": "6.24.1",
     "babel-preset-react": "6.24.1",
     "chai": "4.1.2",
-    "chai-string": "1.4.0",
+    "chai-string": "1.5.0",
     "coveralls": "3.0.0",
     "cz-conventional-changelog": "2.0.0",
     "enzyme": "^3.1.0",