diff --git a/package-lock.json b/package-lock.json
index a475cd1..c3157d4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
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       "license": "GPL-3.0",
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+        "chai": "^6.2.2",
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         "eslint": "^8.17.0",
         "ffjavascript": "^0.3.0",
@@ -161,7 +161,6 @@
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       "dev": true,
-      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
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@@ -240,15 +239,6 @@
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-      "dev": true,
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@@ -314,22 +304,13 @@
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-      "resolved": "https://registry.npmjs.org/chai/-/chai-4.3.10.tgz",
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+      "resolved": "https://registry.npmjs.org/chai/-/chai-6.2.2.tgz",
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-        "loupe": "^2.3.6",
-        "pathval": "^1.1.1",
-        "type-detect": "^4.0.8"
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+      "license": "MIT",
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+        "node": ">=18"
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@@ -477,18 +458,6 @@
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@@ -548,7 +517,6 @@
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@@ -1130,15 +1098,6 @@
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-      "resolved": "https://registry.npmjs.org/loupe/-/loupe-2.3.6.tgz",
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@@ -1370,15 +1329,6 @@
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-      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.1.tgz",
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-      "dev": true,
-      "engines": {
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-      }
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@@ -1661,15 +1611,6 @@
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-      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
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-      "dev": true,
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@@ -1912,8 +1853,7 @@
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-      "dev": true,
-      "peer": true
+      "dev": true
     },
     "acorn-jsx": {
       "version": "5.3.2",
@@ -1965,12 +1905,6 @@
         "picomatch": "^2.0.4"
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-    "assertion-error": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-1.1.0.tgz",
-      "integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
-      "dev": true
-    },
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       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -2021,20 +1955,10 @@
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-      "version": "4.3.10",
-      "resolved": "https://registry.npmjs.org/chai/-/chai-4.3.10.tgz",
-      "integrity": "sha512-0UXG04VuVbruMUYbJ6JctvH0YnC/4q3/AkT18q4NaITo91CUm0liMS9VqzT9vZhVQ/1eqPanMWjBM+Juhfb/9g==",
-      "dev": true,
-      "peer": true,
-      "requires": {
-        "assertion-error": "^1.1.0",
-        "check-error": "^1.0.3",
-        "deep-eql": "^4.1.3",
-        "get-func-name": "^2.0.2",
-        "loupe": "^2.3.6",
-        "pathval": "^1.1.1",
-        "type-detect": "^4.0.8"
-      }
+      "version": "6.2.2",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-6.2.2.tgz",
+      "integrity": "sha512-NUPRluOfOiTKBKvWPtSD4PhFvWCqOi0BGStNWs57X9js7XGTprSmFoz5F0tWhR4WPjNeR9jXqdC7/UpSJTnlRg==",
+      "dev": true
     },
     "chai-as-promised": {
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@@ -2138,15 +2062,6 @@
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-    "deep-eql": {
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-      "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-4.1.3.tgz",
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       "resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.4.tgz",
@@ -2191,7 +2106,6 @@
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       "dev": true,
-      "peer": true,
       "requires": {
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@@ -2626,15 +2540,6 @@
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-      "resolved": "https://registry.npmjs.org/loupe/-/loupe-2.3.6.tgz",
-      "integrity": "sha512-RaPMZKiMy8/JruncMU5Bt6na1eftNoo++R4Y+N2FrxkDVTrGvcyzFTsaGif4QTeKESheMGegbhw6iUAq+5A8zA==",
-      "dev": true,
-      "requires": {
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-      }
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       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
@@ -2806,12 +2711,6 @@
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       "dev": true
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-    "pathval": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.1.tgz",
-      "integrity": "sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ==",
-      "dev": true
-    },
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       "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz",
@@ -2988,12 +2887,6 @@
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-      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
-      "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
-      "dev": true
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       "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.20.2.tgz",
diff --git a/package.json b/package.json
index b8c0049..9891ff6 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "eslint": "^8.17.0",
     "ffjavascript": "^0.3.0",
     "mocha": "^10.0.0",
-    "chai": "^4.3.6",
+    "chai": "^6.2.2",
     "chai-as-promised": "^7.1.1",
     "rollup": "^2.20.0"
   }