diff --git a/javascript/pfi-aud-usd-tbdex/package.json b/javascript/pfi-aud-usd-tbdex/package.json
index 1c9da0cd..e8804ff2 100644
--- a/javascript/pfi-aud-usd-tbdex/package.json
+++ b/javascript/pfi-aud-usd-tbdex/package.json
@@ -21,7 +21,7 @@
   "devDependencies": {
     "@sphereon/pex-models": "2.3.1",
     "@sphereon/ssi-types": "0.30.1",
-    "@types/chai": "4.3.20",
+    "@types/chai": "5.0.0",
     "@types/chai-as-promised": "8.0.1",
     "@types/chai-string": "1.4.5",
     "@types/eslint": "9.6.1",
@@ -33,7 +33,7 @@
     "@types/supertest": "6.0.2",
     "@typescript-eslint/eslint-plugin": "8.10.0",
     "@typescript-eslint/parser": "8.10.0",
-    "chai": "4.5.0",
+    "chai": "5.1.2",
     "chai-as-promised": "8.0.0",
     "chai-string": "1.5.0",
     "eslint": "9.13.0",
diff --git a/javascript/tbdex-pfi-exemplar/package-lock.json b/javascript/tbdex-pfi-exemplar/package-lock.json
index 80a6c4e5..9589dd95 100644
--- a/javascript/tbdex-pfi-exemplar/package-lock.json
+++ b/javascript/tbdex-pfi-exemplar/package-lock.json
@@ -26,7 +26,7 @@
       "devDependencies": {
         "@sphereon/pex-models": "2.3.1",
         "@sphereon/ssi-types": "0.30.1",
-        "@types/chai": "4.3.20",
+        "@types/chai": "5.0.0",
         "@types/chai-as-promised": "8.0.1",
         "@types/chai-string": "1.4.5",
         "@types/eslint": "9.6.1",
@@ -2214,9 +2214,9 @@
       }
     },
     "node_modules/@types/chai": {
-      "version": "4.3.20",
-      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.20.tgz",
-      "integrity": "sha512-/pC9HAB5I/xMlc5FP77qjCnI16ChlJfW0tGa0IUcFn38VJrTV6DeZ60NU5KZBtaOZqjdpwTWohz5HU1RrhiYxQ==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-5.0.0.tgz",
+      "integrity": "sha512-+DwhEHAaFPPdJ2ral3kNHFQXnTfscEEFsUxzD+d7nlcLrFK23JtNjH71RGasTcHb88b4vVi4mTyfpf8u2L8bdA==",
       "dev": true,
       "license": "MIT"
     },
diff --git a/javascript/tbdex-pfi-exemplar/package.json b/javascript/tbdex-pfi-exemplar/package.json
index 7c900c03..4d864a86 100644
--- a/javascript/tbdex-pfi-exemplar/package.json
+++ b/javascript/tbdex-pfi-exemplar/package.json
@@ -21,7 +21,7 @@
   "devDependencies": {
     "@sphereon/pex-models": "2.3.1",
     "@sphereon/ssi-types": "0.30.1",
-    "@types/chai": "4.3.20",
+    "@types/chai": "5.0.0",
     "@types/chai-as-promised": "8.0.1",
     "@types/chai-string": "1.4.5",
     "@types/eslint": "9.6.1",