diff --git a/javascript/pfi-aud-usd-tbdex/package.json b/javascript/pfi-aud-usd-tbdex/package.json
index 0d2dfb6f..b1443481 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": "5.1.1",
     "chai-as-promised": "8.0.0",
     "chai-string": "1.5.0",
     "eslint": "8.57.1",
diff --git a/javascript/tbdex-pfi-exemplar/package.json b/javascript/tbdex-pfi-exemplar/package.json
index 676f7fc2..27330734 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",
@@ -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": "5.1.1",
     "chai-as-promised": "8.0.0",
     "chai-string": "1.5.0",
     "eslint": "8.57.1",