diff --git a/.env.development b/.env.development
index 10250eda..90d36244 100644
--- a/.env.development
+++ b/.env.development
@@ -1,5 +1,4 @@
 SECRET_KEY_BASE=verysecret
-REDIS_URL=redis://localhost
 RACK_MINI_PROFILER=1
 ENABLE_QUERY_TRACE=1
 APPLICATION_HOST=localhost
diff --git a/Gemfile b/Gemfile
index ab1b5e4a..3df871e5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -34,7 +34,6 @@ gem "rails", "~> 6.1"
 gem "rails-i18n", "~> 6.0"
 gem "recipient_interceptor"
 gem "redcarpet", "~> 3.5.1"
-gem "redis"
 gem "responders"
 gem "russian"
 gem "sass-rails", "~> 6.0"
diff --git a/Gemfile.lock b/Gemfile.lock
index d3e4b249..428be8cc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -371,7 +371,6 @@ GEM
     recipient_interceptor (0.2.0)
       mail
     redcarpet (3.5.1)
-    redis (3.3.3)
     regexp_parser (2.9.0)
     responders (3.1.1)
       actionpack (>= 5.2)
@@ -561,7 +560,6 @@ DEPENDENCIES
   rails_stdout_logging
   recipient_interceptor
   redcarpet (~> 3.5.1)
-  redis
   responders
   rspec-rails
   rubocop-rails-omakase
diff --git a/README.md b/README.md
index 529473f5..7c338175 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,9 @@
-# It61
-
-[![View performance data on Skylight](https://badges.skylight.io/status/9ACn286v2ne4.svg)](https://oss.skylight.io/app/applications/9ACn286v2ne4)
+# IT61
 
 ## Requirements
 
-- Ruby 2.4.3 (with bundler)
-- PostgreSQL >= 9.5
-- Redis
+- Ruby 3.1.1
+- PostgreSQL 16.2
 
 ## Development setup
 
@@ -14,15 +11,8 @@
 2. **optional:** Install `overcommit` for GIT commit hooks
 3. **optional:** Install GIT hooks with `overcommit`: `overcommit --install -f`
 4. **optional:** Run `overcommit --sign` to trust the hooks in this repository.
-5. Before creating the database you must setup connection strings for PostgreSQL and Redis. Put these default values to `.env` file:
-
-    ```
-    DATABASE_URL=postgres://postgres@localhost:5432/it61
-    REDIS_URL=redis://localhost:6379
-    ```
-
-6. Setup database and run migrations: `rails db:setup`
-7. Run server: `./bin/rails server`
+5. Setup database and run migrations: `rails db:setup`
+6. Run server: `./bin/rails server`
 
 ## Docker development setup
 
diff --git a/config/cable.yml b/config/cable.yml
index e511601c..d040ac76 100644
--- a/config/cable.yml
+++ b/config/cable.yml
@@ -1,12 +1,15 @@
 development:
-  adapter: async
+  adapter: postgresql
 
 test:
-  adapter: async
+  adapter: test
 
 staging:
-  adapter: async
+  adapter: redis
+  url: <%= ENV.fetch("REDIS_URL") { "redis://localhost:6379/1" } %>
+  channel_prefix: it61_staging
 
 production:
   adapter: redis
-  url: <%= ENV.fetch("REDIS_URL", "redis://localhost:6379/1") %>
+  url: <%= ENV.fetch("REDIS_URL") { "redis://localhost:6379/1" } %>
+  channel_prefix: it61_production
diff --git a/config/initializers/rack_mini_profiler.rb b/config/initializers/rack_mini_profiler.rb
index 8f83fa28..4dddaabb 100644
--- a/config/initializers/rack_mini_profiler.rb
+++ b/config/initializers/rack_mini_profiler.rb
@@ -14,10 +14,6 @@
 end
 
 if defined?(Rack::MiniProfiler)
-  uri = URI.parse(ENV["REDIS_URL"])
-  Rack::MiniProfiler.config.storage_options = { host: uri.host, port: uri.port, password: uri.password }
-  Rack::MiniProfiler.config.storage = Rack::MiniProfiler::RedisStore
-
   skip = [
     /assets/,
     /\/avatar\//,
diff --git a/config/initializers/redis.rb b/config/initializers/redis.rb
deleted file mode 100644
index a971c9f3..00000000
--- a/config/initializers/redis.rb
+++ /dev/null
@@ -1 +0,0 @@
-$redis = Redis.new(url: ENV["REDIS_URL"])
diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index 2a871507..f265d35b 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -1,4 +1,4 @@
-version: '2'
+version: "2"
 services:
   # Main application container
   app:
@@ -14,12 +14,10 @@ services:
       - "3000:3000"
     environment:
       - DATABASE_URL=postgres://postgres@db:5432/it61
-      - REDIS_URL=redis://redis:6379/1
       # Uncomment if you REALLY know what this variable stands for and you REALLY need this
       # - BUNDLE_JOBS=6
     depends_on:
       - db
-      - redis
 
   # Mounted folder for Gemfile gems container
   gems:
@@ -32,6 +30,3 @@ services:
     image: postgres
     ports:
       - "6543:5432"
-
-  redis:
-    image: redis