diff --git a/package-lock.json b/package-lock.json
index 3057171..bcd704d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "rats-search",
-  "version": "1.1.1",
+  "version": "1.1.3",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/src/background/p2p.js b/src/background/p2p.js
index cc0efdf..05453c9 100644
--- a/src/background/p2p.js
+++ b/src/background/p2p.js
@@ -13,10 +13,14 @@ const directoryFilesRecursive = require('./directoryFilesRecursive')
 const {promisify} = require('util');
 const mkdirp = promisify(require('mkdirp'))
 const deleteFolderRecursive = require('./deleteFolderRecursive')
+const compareVersions = require('compare-versions');
 
 class p2p {
 	constructor(send = () => {})
 	{
+		this.minClientVersion = '1.1.0'
+		this.minServerVersion = '1.1.0'
+
 		this.events = new EventEmitter
 		this.peers = []
 		this.clients = []
@@ -92,6 +96,11 @@ class p2p {
 			if(!data || data.protocol != 'rats')
 				return
 
+			if(compareVersions(data.version, this.minServerVersion) < 0) {
+				logTE('p2p', `ignore peer because of version ${data.version} < ${this.minServerVersion}`);
+				return;
+			}
+
 			// protocol ok
 			clearTimeout(socketObject.protocolTimeout)
 			const { _socket: socket } = socketObject
@@ -369,6 +378,12 @@ class p2p {
 				if(this.ignoreAddresses.includes(address.address))
 					return;
 
+				if(compareVersions(data.version, this.minClientVersion) < 0) {
+					logTE('p2p', `ignore client peer because of version ${data.version} < ${this.minClientVersion}`)
+					rawSocket.destroy()
+					return;
+				}
+
 				// success
 				clearTimeout(protocolTimeout)