diff --git a/package-lock.json b/package-lock.json
index 355f4778..9eff64ea 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -32,7 +32,7 @@
         "ts-mocha": "^10.0.0",
         "ts-node": "^10.9.1",
         "typescript": "^5.0.0",
-        "undici": "^5.24.0"
+        "undici": "^6.6.0"
       },
       "engines": {
         "node": ">=18"
@@ -4469,15 +4469,15 @@
       }
     },
     "node_modules/undici": {
-      "version": "5.27.2",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-5.27.2.tgz",
-      "integrity": "sha512-iS857PdOEy/y3wlM3yRp+6SNQQ6xU0mmZcwRSriqk+et/cwWAtwmIGf6WkoDN2EK/AMdCO/dfXzIwi+rFMrjjQ==",
+      "version": "6.6.0",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-6.6.0.tgz",
+      "integrity": "sha512-p8VvLAgnx6g9pydV0GG/kciSx3ZCq5PLeEU4yefjoZCc1HSeiMxbrFzYIZlgSMrX3l0CoTJ37C6edu13acE40A==",
       "dev": true,
       "dependencies": {
         "@fastify/busboy": "^2.0.0"
       },
       "engines": {
-        "node": ">=14.0"
+        "node": ">=18.0"
       }
     },
     "node_modules/undici-types": {
diff --git a/package.json b/package.json
index cc4e7a93..e8aace8d 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "ts-mocha": "^10.0.0",
     "ts-node": "^10.9.1",
     "typescript": "^5.0.0",
-    "undici": "^5.24.0"
+    "undici": "^6.6.0"
   },
   "bugs": {
     "url": "https://github.com/lokalise/node-lokalise-api/issues"