diff --git a/package-lock.json b/package-lock.json
index a13a3b9..a25c586 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -757,6 +757,12 @@
       "integrity": "sha512-+iTbntw2IZPb/anVDbypzfQa+ay64MW0Zo8aJ8gZPWMMK6/OubMVb6lUPMagqjOPnmtauXnFCACVl3O7ogjeqQ==",
       "dev": true
     },
+    "@types/chai": {
+      "version": "4.1.7",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.1.7.tgz",
+      "integrity": "sha512-2Y8uPt0/jwjhQ6EiluT0XCri1Dbplr0ZxfFXUz+ye13gaqE8u5gL5ppao1JrUYr9cIip5S6MvQzBS7Kke7U9VA==",
+      "dev": true
+    },
     "@types/hoist-non-react-statics": {
       "version": "3.3.1",
       "resolved": "https://registry.npmjs.org/@types/hoist-non-react-statics/-/hoist-non-react-statics-3.3.1.tgz",
diff --git a/package.json b/package.json
index 00fa97d..615b06a 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,7 @@
     "@babel/plugin-proposal-class-properties": "^7.4.4",
     "@babel/preset-react": "^7.0.0",
     "@babel/preset-typescript": "^7.3.3",
+    "@types/chai": "^4.1.7",
     "@types/prop-types": "^15.7.1",
     "@types/react": "^16.8.15",
     "@types/react-dom": "^16.8.4",