diff --git a/gen/.tool-versions b/gen/.tool-versions
index 7ce26c3..e1a715e 100644
--- a/gen/.tool-versions
+++ b/gen/.tool-versions
@@ -1,2 +1,2 @@
 nodejs 13.7.0
-ruby 2.6.2
+ruby 2.6.6
diff --git a/gen/Gemfile b/gen/Gemfile
new file mode 100644
index 0000000..6030796
--- /dev/null
+++ b/gen/Gemfile
@@ -0,0 +1,3 @@
+source "https://rubygems.org"
+
+gem "activesupport", "~> 6.0"
diff --git a/gen/Gemfile.lock b/gen/Gemfile.lock
new file mode 100644
index 0000000..ef7199d
--- /dev/null
+++ b/gen/Gemfile.lock
@@ -0,0 +1,26 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    activesupport (6.0.3.4)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
+      minitest (~> 5.1)
+      tzinfo (~> 1.1)
+      zeitwerk (~> 2.2, >= 2.2.2)
+    concurrent-ruby (1.1.7)
+    i18n (1.8.5)
+      concurrent-ruby (~> 1.0)
+    minitest (5.14.2)
+    thread_safe (0.3.6)
+    tzinfo (1.2.8)
+      thread_safe (~> 0.1)
+    zeitwerk (2.4.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  activesupport (~> 6.0)
+
+BUNDLED WITH
+   1.17.2