diff --git a/README.md b/README.md
index c7d8fbc..c280c3e 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ Below are the methods supported in this class.
|---|---|
|Constructor|Expect 2 input parameters:
- Full path of IP2Proxy BIN data file.
- File Open Mode
- SHARED_MEMORY
- MEMORY_CACHE
- FILE_IO
For SHARED_MEMORY and MEMORY_CACHE, it will require your server to have sufficient memory to hold the BIN data, otherwise it will raise the errors during the object initialization.|
|**string** getDatabaseVersion()|Return the database's compilation date as a string of the form 'YYYY-MM-DD',|
-|**string** getPackageVersion()|Return the database's type, 1 to 10 respectively for PX1 to PX10. Please visit https://www.ip2location.com/databases/ip2proxy for details.|
+|**string** getPackageVersion()|Return the database's type, 1 to 10 respectively for PX1 to PX11. Please visit https://www.ip2location.com/databases/ip2proxy for details.|
|**string** getModuleVersion()|Return the version of module.|
|**array** lookup($ip)|Return the IP information in array. Below is the information returned:- ipNumber
- ipVersion
- ipAddress
- countryCode
- countryName
- regionName
- cityName
- isp
- domain
- usageType
- asn
- as
- lastSeen
- threat
- proxyType
- isProxy
- provider
You can visit [IP2Location](https://www.ip2location.com/database/px10-ip-proxytype-country-region-city-isp-domain-usagetype-asn-lastseen-threat-residential) website for the description of each field. Note: although the above names are not exactly matched with the names given in this link, but they are self-described.|
@@ -68,7 +68,7 @@ echo 'State: ' . $records['regionName'] . '
';
echo 'City: ' . $records['cityName'] . '
';
/*
- Type of proxy: VPN, TOR, DCH, PUB, WEB, RES (RES available in PX10 only)
+ Type of proxy: VPN, TOR, DCH, PUB, WEB, RES (RES available in PX11 only)
*/
echo 'Proxy Type: ' . $records['proxyType'] . '
';