diff --git a/package-lock.json b/package-lock.json
index c9fb4859..775d533b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,7 +18,7 @@
         "@fastify/jwt": "^8.0.1",
         "@fastify/schedule": "^4.1.1",
         "@fastify/swagger": "^8.14.0",
-        "@fastify/swagger-ui": "^3.1.0",
+        "@fastify/swagger-ui": "^4.0.0",
         "@lokalise/backend-http-client": "^1.4.0",
         "@lokalise/background-jobs-common": "^3.4.0",
         "@lokalise/fastify-extras": "^21.2.1",
@@ -1865,9 +1865,9 @@
       }
     },
     "node_modules/@fastify/swagger-ui": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/@fastify/swagger-ui/-/swagger-ui-3.1.0.tgz",
-      "integrity": "sha512-68jm6k8VzvHXkEBT4Dakm/kkzUlPO4POIi0agWJSWxsYichPBqzjo+IpfqPl4pSJR1zCToQhEOo+cv+yJL2qew==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/@fastify/swagger-ui/-/swagger-ui-4.0.0.tgz",
+      "integrity": "sha512-ZbVJg4bQHNyd10f6DZftMMuSPKpkh6ePB5TfbZLSjUQmfIDnNYBWhGv8o0iUxYbLAyIz1oa5xqp2e/Z9B7wlFg==",
       "dependencies": {
         "@fastify/static": "^7.0.0",
         "fastify-plugin": "^4.0.0",
diff --git a/package.json b/package.json
index b20df181..7af92556 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "@fastify/jwt": "^8.0.1",
     "@fastify/schedule": "^4.1.1",
     "@fastify/swagger": "^8.14.0",
-    "@fastify/swagger-ui": "^3.1.0",
+    "@fastify/swagger-ui": "^4.0.0",
     "@lokalise/backend-http-client": "^1.4.0",
     "@lokalise/background-jobs-common": "^3.4.0",
     "@lokalise/fastify-extras": "^21.2.1",
diff --git a/src/app.e2e.spec.ts b/src/app.e2e.spec.ts
index bbb60999..274eddc6 100644
--- a/src/app.e2e.spec.ts
+++ b/src/app.e2e.spec.ts
@@ -82,7 +82,7 @@ describe('app', () => {
     })
 
     it('Returns OpenAPI information (HTML)', async () => {
-      const response = await app.inject().get('/documentation/static/index.html').end()
+      const response = await app.inject().get('/documentation').end()
 
       expect(response.statusCode).toBe(200)
     })