diff --git a/Cargo.toml b/Cargo.toml
index ec87483..a7cecfa 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "kosyncrs"
-version = "2.0.0"
+version = "1.1.1"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
diff --git a/README.md b/README.md
index 838a9e2..2a864d9 100644
--- a/README.md
+++ b/README.md
@@ -28,14 +28,14 @@ Connect to the database as user *kosync* (with psql) and create the database tab
 ```sql
 CREATE TABLE users (
   id BIGSERIAL PRIMARY KEY,
-  username TEXT UNIQUE NOT NULL,
+  username TEXT NOT NULL,
   password TEXT
 );
 
 CREATE TABLE progresses (
   id BIGSERIAL PRIMARY KEY,
   user_id BIGINT,
-  document TEXT NOT NULL,
+  document TEXT UNIQUE NOT NULL,
   progress TEXT NOT NULL,
   percentage REAL NOT NULL,
   device TEXT NOT NULL,
@@ -45,4 +45,4 @@ CREATE TABLE progresses (
      REFERENCES users(id) ON DELETE CASCADE,
   UNIQUE (user_id, document)
 );
-```
+```
\ No newline at end of file
diff --git a/python/redis2pg.py b/python/redis2pg.py
deleted file mode 100644
index c96efcb..0000000
--- a/python/redis2pg.py
+++ /dev/null
@@ -1,52 +0,0 @@
-#!/usr/bin/env python3
-
-import psycopg2
-import re
-import redis
-
-con = redis.Redis()
-
-pgcon = psycopg2.connect("postgresql://kosync:mypassword@localhost/kosync")
-pgcur = pgcon.cursor()
-
-userkeys = con.keys('user:*:key')
-
-for key in userkeys:
-    key = key.decode('utf-8')
-    match = re.search('user:(.*):key', key)
-    username = match.group(1)
-    password = con.get(key).decode('utf-8')
-
-    documentkeys = con.keys('user:' + username + ':document:*')
-    if len(documentkeys) == 0:
-        print("Skipped:", username)
-        continue
-    
-    pgcur.execute("INSERT INTO users (username, password) VALUES (%s, %s) ON CONFLICT (username) DO UPDATE SET username = %s, password = %s",
-                  (username, password, username, password))
-
-    pgcur.execute("SELECT id FROM users WHERE username = %s", (username,))
-    res = pgcur.fetchone()
-    user_id = res[0]
-
-    for dockey in documentkeys:
-        dockey = dockey.decode('utf-8')
-
-        match = re.search("user:.*:(.*)", dockey)
-        document = match.group(1)
-
-        docvals = con.hgetall(dockey)
-
-        progress = docvals[b"progress"].decode()
-        percentage = docvals[b"percentage"].decode()
-        device = docvals[b"device"].decode()
-        device_id = docvals[b"device_id"].decode()
-        timestamp = docvals[b"timestamp"].decode()
-
-        pgcur.execute("INSERT INTO progresses (user_id, document, progress, percentage, device, device_id, timestamp) VALUES (%s, %s, %s, %s, %s, %s, %s) ON CONFLICT (user_id, document) DO UPDATE SET user_id = %s, document = %s, progress = %s, percentage = %s, device = %s, device_id = %s, timestamp = %s",
-                      (user_id, document, progress, percentage, device, device_id, timestamp, user_id, document, progress, percentage, device, device_id, timestamp))
-
-pgcon.commit()
-
-pgcur.close()
-pgcon.close()