diff --git a/INSTALL.md b/INSTALL.md
index ac33549..6c5cbab 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -2,7 +2,7 @@ You will need the following software for the installation:
 * Apache Web Server (2.4 or later) or NGINX
 * Composer (for setup)
 * `ln` program (for setup, comes with GNU Coreutils)
-* PHP (8.0 or later)
+* PHP (8.1 or later)
 * YAML extension
 * Percona Server or MySQL 8+ (with legacy auth mechanism)
 
diff --git a/composer.json b/composer.json
index 8a1b040..7ed21c6 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
     "require": {
-        "php": "~7.3||~8.1",
+        "php": "~8.1",
 	
         "nette/utils": "^3.0",
         "nette/di": "^3.0",