diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..a3ec5a4
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+3.2
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..68d2441
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+gem "sequel"
+
+group :dev do
+  gem "minitest"
+  gem "rake"
+end
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 0000000..6a71ebb
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,19 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    bigdecimal (3.1.4)
+    minitest (5.20.0)
+    rake (13.0.6)
+    sequel (5.73.0)
+      bigdecimal
+
+PLATFORMS
+  arm64-darwin-22
+
+DEPENDENCIES
+  minitest
+  rake
+  sequel
+
+BUNDLED WITH
+   2.4.1
diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..b0ec822
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,3 @@
+require "minitest/test_task"
+
+Minitest::TestTask.create