diff --git a/README.md b/README.md
index 4ed707a..ea3e496 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# GeoIP & GeoSite with RU blacklist
+# GeoIP & GeoSite with RU Blacklist
 
 Generates `geoip.dat` and `geosite.dat` for Xray with additional data:
 - Category with sites blocked in Russia (`geosite:category-ru-blocked-domains`).
@@ -6,4 +6,22 @@ Generates `geoip.dat` and `geosite.dat` for Xray with additional data:
 
 Data sources:
 - [v2fly/geoip](https://github.com/v2fly/geoip) for `geoip.dat`.
-- [v2fly/domain-list-community](https://github.com/v2fly/domain-list-community) for `geosite.dat`.
\ No newline at end of file
+- [v2fly/domain-list-community](https://github.com/v2fly/domain-list-community) for `geosite.dat`.
+
+You can replace original `geoip.dat` and `geosite.dat` with the ones from this repo and route only blocked traffic through the proxy.
+
+# GeoIP Categories
+
+- `geoip:ru-blocked-ips-all` - IP's and IP ranges blocked in Russia.
+- `geoip:ru-blocked-ips-directblock` - IP's blocked in Russia directly by address.
+- `geoip:ru-blocked-ips-noid2971` - IP's and IP ranges blocked in Russia excluding those blocked by 33а-5536/2019.
+
+# GeoSite Categories
+
+- `geosite:category-ru-blocked-domains` - domains and subdomains blocked in Russia.
+- `geosite:category-ru-blocked-zones` - only second-level domains blocked in Russia (even if only subdomain was blocked).
+
+# Automatic Update
+
+There is no universal recipe. Just download `geoip.dat` and `geosite.dat` from latest release daily and replace old files with the new ones. 
+You can find an example of how to get the latest files in the [`update.sh`](./update.sh). And please, for the love of all that is holy, **don't put** `curl -fsSL ... | bash` to your crontab, **it's not safe**.
diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..92a2cb9
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+set -euxo pipefail;
+current=`curl 'https://gitea.neur0tx.site/api/v1/repos/xray-addons/geoip-geosite-with-ru-blocklist/releases/latest'`
+geoipUrl=`echo "$current" | jq -r '.assets | map( { (.name|tostring): . } ) | add | ."geoip.dat".browser_download_url'`
+geositeUrl=`echo "$current" | jq -r '.assets | map( { (.name|tostring): . } ) | add | ."geosite.dat".browser_download_url'`
+[ -f geoip.dat ] && mv geoip.dat geoip.dat.bak
+[ -f geosite.dat ] && mv geosite.dat geosite.dat.bak
+curl -fsSL "$geoipUrl" -o geoip.dat
+curl -fsSL "$geositeUrl" -o geosite.dat
+[ -f geoip.dat ] && [ -f geoip.dat.bak ] && rm geoip.dat.bak
+[ -f geosite.dat ] && [ -f geosite.dat.bak ]  && rm geosite.dat.bak
+[ ! -f geoip.dat ] && mv geoip.dat.bak geoip.dat
+[ ! -f geosite.dat ] && mv geosite.dat.bak geosite.dat