diff --git a/package-lock.json b/package-lock.json
index fe32973..885c351 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -193,16 +193,16 @@
       "dev": true
     },
     "chai": {
-      "version": "4.1.2",
-      "resolved": "https://registry.npmjs.org/chai/-/chai-4.1.2.tgz",
-      "integrity": "sha1-D2RYS6ZC8PKs4oBiefTwbKI61zw=",
+      "version": "4.3.4",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-4.3.4.tgz",
+      "integrity": "sha512-yS5H68VYOCtN1cjfwumDSuzn/9c+yza4f3reKXlE5rUg7SFcCEy90gJvydNgOYtblyf4Zi6jIWRnXOgErta0KA==",
       "requires": {
-        "assertion-error": "1.1.0",
-        "check-error": "1.0.2",
-        "deep-eql": "3.0.1",
-        "get-func-name": "2.0.0",
-        "pathval": "1.1.0",
-        "type-detect": "4.0.8"
+        "assertion-error": "^1.1.0",
+        "check-error": "^1.0.2",
+        "deep-eql": "^3.0.1",
+        "get-func-name": "^2.0.0",
+        "pathval": "^1.1.1",
+        "type-detect": "^4.0.5"
       }
     },
     "chalk": {
@@ -335,7 +335,7 @@
       "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-3.0.1.tgz",
       "integrity": "sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==",
       "requires": {
-        "type-detect": "4.0.8"
+        "type-detect": "^4.0.0"
       }
     },
     "deep-is": {
@@ -1151,9 +1151,9 @@
       "integrity": "sha1-32BBeABfUi8V60SQ5yR6G/qmf4w="
     },
     "pathval": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.0.tgz",
-      "integrity": "sha1-uULm1L3mUwBe9rcTYd74cn0GReA="
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.1.tgz",
+      "integrity": "sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ=="
     },
     "pify": {
       "version": "2.3.0",
diff --git a/package.json b/package.json
index e8f0bdc..dd9194e 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   "license": "ISC",
   "description": "This project parse file with log of users sessions and show statistics on main page in browser",
   "dependencies": {
-    "chai": "^4.1.2",
+    "chai": "^4.3.4",
     "express": "^4.16.3",
     "useragent": "^2.3.0"
   },