diff --git a/lib/entities-store.js b/lib/entities-store.js
index 78e499b..8c7895b 100644
--- a/lib/entities-store.js
+++ b/lib/entities-store.js
@@ -1,6 +1,6 @@
 'use strict'
 
-const schema = require('gtfs-rt-bindings/schema.json')
+const schema = require('gtfs-rt-bindings/gtfs-realtime.schema.json')
 const {varint} = require('protocol-buffers-encodings')
 const {FeedEntity, FeedHeader, FeedMessage} = require('gtfs-rt-bindings')
 
@@ -46,7 +46,8 @@ const createEntitiesStore = (ttl, timestamp) => {
 		// todo: use sth more memory-efficient than closures?
 		timers.set(id, setTimeout(del, ttl, id))
 
-		const data = FeedEntity.encode(entity)
+		FeedEntity.verify(entity)
+		const data = FeedEntity.encode(entity).finish()
 		datas.set(id, data)
 
 		const field = encodeField(
@@ -73,11 +74,13 @@ const createEntitiesStore = (ttl, timestamp) => {
 		const ids = Array.from(timers.keys())
 		const chunks = new Array(2 + ids.length * 2)
 
-		const header = chunks[1] = FeedHeader.encode({
+		const rawHeader = {
 			gtfs_realtime_version: '2.0',
 			incrementality: FeedHeader.Incrementality.FULL_DATASET,
 			timestamp: timestamp(),
-		})
+		}
+		FeedHeader.verify(rawHeader)
+		const header = chunks[1] = FeedHeader.encode(rawHeader).finish()
 		const headerField = chunks[0] = encodeField(
 			FEED_MSG_HEADER,
 			LENGTH_DELIMITED,
diff --git a/package.json b/package.json
index 3998eb6..2aa5ee3 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
 		"node": ">=14"
 	},
 	"dependencies": {
-		"gtfs-rt-bindings": "^3.1.0",
+		"gtfs-rt-bindings": "^4.0.0",
 		"protocol-buffers-encodings": "^1.1.0"
 	},
 	"devDependencies": {
diff --git a/test/index.js b/test/index.js
index fdd0e92..61d3dfd 100644
--- a/test/index.js
+++ b/test/index.js
@@ -60,7 +60,7 @@ const header = {
 
 const feedMsgEqual = (store, entities) => {
 	const actual = store.asFeedMessage()
-	const expected = FeedMessage.encode({header, entity: entities})
+	const expected = FeedMessage.encode({header, entity: entities}).finish()
 	bufEqual(actual, expected)
 }
 
@@ -104,20 +104,21 @@ pump(
 		bufEqual(full.asFeedMessage(), Buffer.from(
 			`\
 0a090a03322e301000180112520a0132224d0a1b0a15317c36343436367c317c38367\
-c31323033323032302a026e36421212105520416c742d4d617269656e646f7266120a\
-0d66665042159a9951413a0c39303030303030313231303620011289020a01331a830\
-20a1b0a15317c32353434357c327c38367c31323033323032302a026e331a1a0a0534\
-303831331211552057697474656e62657267706c61747a121c220c393030303030303\
-53033303112001a08080010b8b1abf3052800122c220c393030303030303233333534\
-120c08c4ffffff0f10c0bfabf3051a0c08c4ffffff0f10c0bfabf3052800122c220c3\
-93030303030303233323033120c08c4ffffff0f10fcbfabf3051a0c08c4ffffff0f10\
-fcbfabf3052800122c220c393030303030303233323034120c08c4ffffff0f10f4c0a\
-bf3051a0c08c4ffffff0f10f4c0abf30528001220220c393030303030303536313031\
-120c08c4ffffff0f10b0c1abf3051a002800124f0a0134224a0a1c0a15317c3634353\
-1327c317c38367c31323033323032302a036e3138420e120c55204d6f6872656e7374\
-722e120a0d6666524215666656413a0c3930303030303030353230352002122c0a013\
-522270a070a0274312a014142100a066275732d31321206427573203132120a0da470\
-9d3f158fc21540`,
+c31323033323032302a026e36120a0d66665042159a99514120013a0c393030303030\
+303132313036421212105520416c742d4d617269656e646f726612ac020a01331aa60\
+20a1b0a15317c32353434357c327c38367c31323033323032302a026e33121c12001a\
+08080010b8b1abf305220c39303030303030353033303128001236121108c4fffffff\
+fffffffff0110c0bfabf3051a1108c4ffffffffffffffff0110c0bfabf305220c3930\
+3030303030323333353428001236121108c4ffffffffffffffff0110fcbfabf3051a1\
+108c4ffffffffffffffff0110fcbfabf305220c393030303030303233323033280012\
+36121108c4ffffffffffffffff0110f4c0abf3051a1108c4ffffffffffffffff0110f\
+4c0abf305220c39303030303030323332303428001225121108c4ffffffffffffffff\
+0110b0c1abf3051a00220c39303030303030353631303128001a1a0a0534303831331\
+211552057697474656e62657267706c61747a124f0a0134224a0a1c0a15317c363435\
+31327c317c38367c31323033323032302a036e3138120a0d666652421566665641200\
+23a0c393030303030303035323035420e120c55204d6f6872656e7374722e122c0a01\
+3522270a070a0274312a0141120a0da4709d3f158fc2154042100a066275732d31321\
+206427573203132`,
 			'hex'
 		))
 		ok(Number.isInteger(full.timeModified()), 'invalid full.timeModified()')