diff --git a/package-lock.json b/package-lock.json
index 4f8d3d0..f540184 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -627,9 +627,9 @@
       }
     },
     "chai": {
-      "version": "4.3.1",
-      "resolved": "https://registry.npmjs.org/chai/-/chai-4.3.1.tgz",
-      "integrity": "sha512-JClPZFGRcSl7X8dYzlCJY7v+X1fBA+9Y339Y8EqhBVfp0QC1hTnaf7nMfR+XZ74clkBC64b0iEw2cWKHt3EVqA==",
+      "version": "4.3.3",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-4.3.3.tgz",
+      "integrity": "sha512-MPSLOZwxxnA0DhLE84klnGPojWFK5KuhP7/j5dTsxpr2S3XlkqJP5WbyYl1gCTWvG2Z5N+HD4F472WsbEZL6Pw==",
       "dev": true,
       "requires": {
         "assertion-error": "^1.1.0",
diff --git a/package.json b/package.json
index 272a094..363a932 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "node-fetch": "^1.7.1"
   },
   "devDependencies": {
-    "chai": "4.3.1",
+    "chai": "4.3.3",
     "eslint": "5.16.0",
     "eslint-config-standard": "11.0.0",
     "eslint-plugin-import": "2.22.1",