diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,3 +1,22 @@
-myTinyTodo
+# myTinyTodo
+
+Your tiny todo list
 
 Original website - http://www.mytinytodo.net/
+
+### System requirements
+- PHP 7.2 or greater
+- PHP extensions:
+  - mbstring
+  - pdo_sqlite, intl (SQLite version)
+  - pdo_mysql or mysqli (MySQL version)
+  - pdo_pgsql (PostgreSQL version)
+- One of databases:
+  - MySQL 5.7 or greater / MariaDB 10.2 or greater
+  - PostgreSQL 10 or greater
+  - SQLite (system library)
+
+Supported browsers: Chrome 49, Safari 10, Firefox 53.
+
+Internet Explorer and Opera with Presto engine are not supported.
+