diff --git a/.ruby-gemset b/.ruby-gemset
new file mode 100644
index 0000000..ab946f0
--- /dev/null
+++ b/.ruby-gemset
@@ -0,0 +1 @@
+crypto_libertarian-lesson-decentralized_microblog_in_ruby
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..85588be
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+ruby-3.0.0
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..ebc4588
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 0000000..2a55bb6
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,11 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+
+PLATFORMS
+  x86_64-linux
+
+DEPENDENCIES
+
+BUNDLED WITH
+   2.2.5