diff --git a/.idea/knockout.iml b/.idea/knockout.iml
index 7cac230..9e1eec1 100644
--- a/.idea/knockout.iml
+++ b/.idea/knockout.iml
@@ -26,82 +26,19 @@
       <excludeFolder url="file://$MODULE_DIR$/public/system" />
       <excludeFolder url="file://$MODULE_DIR$/components" />
     </content>
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     <orderEntry type="sourceFolder" forTests="false" />
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-    <orderEntry type="library" scope="PROVIDED" name="zeitwerk (v2.5.3, rbenv: 3.0.2) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="bundler (v2.3.3, ruby-3.1.0-p0) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="debug (v1.4.0, ruby-3.1.0-p0) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="digest (v3.1.0, ruby-3.1.0-p0) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="irb (v1.4.1, ruby-3.1.0-p0) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="matrix (v0.4.2, ruby-3.1.0-p0) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="minitest (v5.15.0, ruby-3.1.0-p0) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="net-pop (v0.1.1, ruby-3.1.0-p0) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="net-smtp (v0.3.1, ruby-3.1.0-p0) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="racc (v1.6.0, ruby-3.1.0-p0) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="rake (v13.0.6, ruby-3.1.0-p0) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="rexml (v3.2.5, ruby-3.1.0-p0) [gem]" level="application" />
   </component>
   <component name="RModuleSettingsStorage">
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@@ -110,62 +47,76 @@
   <component name="RailsGeneratorsCache">
     <option name="generators">
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-        <option value="active_record:application_record" />
-        <option value="active_record:multi_db" />
-        <option value="application_record" />
-        <option value="benchmark" />
-        <option value="channel" />
+        <option value="active_record:migration" />
+        <option value="active_record:model" />
+        <option value="active_record:observer" />
+        <option value="active_record:session_migration" />
         <option value="controller" />
+        <option value="erb:controller" />
+        <option value="erb:mailer" />
+        <option value="erb:scaffold" />
         <option value="generator" />
         <option value="helper" />
         <option value="integration_test" />
-        <option value="jbuilder" />
-        <option value="job" />
-        <option value="mailbox" />
         <option value="mailer" />
+        <option value="metal" />
         <option value="migration" />
         <option value="model" />
+        <option value="model_subclass" />
+        <option value="observer" />
+        <option value="performance_test" />
+        <option value="plugin" />
         <option value="resource" />
         <option value="scaffold" />
         <option value="scaffold_controller" />
-        <option value="stimulus" />
-        <option value="system_test" />
-        <option value="task" />
-        <option value="test_unit:channel" />
-        <option value="test_unit:generator" />
-        <option value="test_unit:install" />
-        <option value="test_unit:mailbox" />
+        <option value="session_migration" />
+        <option value="stylesheets" />
+        <option value="test_unit:controller" />
+        <option value="test_unit:helper" />
+        <option value="test_unit:integration" />
+        <option value="test_unit:mailer" />
+        <option value="test_unit:model" />
+        <option value="test_unit:observer" />
+        <option value="test_unit:performance" />
         <option value="test_unit:plugin" />
+        <option value="test_unit:scaffold" />
       </list>
     </option>
     <option name="myGenerators">
       <list>
-        <option value="active_record:application_record" />
-        <option value="active_record:multi_db" />
-        <option value="application_record" />
-        <option value="benchmark" />
-        <option value="channel" />
+        <option value="active_record:migration" />
+        <option value="active_record:model" />
+        <option value="active_record:observer" />
+        <option value="active_record:session_migration" />
         <option value="controller" />
+        <option value="erb:controller" />
+        <option value="erb:mailer" />
+        <option value="erb:scaffold" />
         <option value="generator" />
         <option value="helper" />
         <option value="integration_test" />
-        <option value="jbuilder" />
-        <option value="job" />
-        <option value="mailbox" />
         <option value="mailer" />
+        <option value="metal" />
         <option value="migration" />
         <option value="model" />
+        <option value="model_subclass" />
+        <option value="observer" />
+        <option value="performance_test" />
+        <option value="plugin" />
         <option value="resource" />
         <option value="scaffold" />
         <option value="scaffold_controller" />
-        <option value="stimulus" />
-        <option value="system_test" />
-        <option value="task" />
-        <option value="test_unit:channel" />
-        <option value="test_unit:generator" />
-        <option value="test_unit:install" />
-        <option value="test_unit:mailbox" />
+        <option value="session_migration" />
+        <option value="stylesheets" />
+        <option value="test_unit:controller" />
+        <option value="test_unit:helper" />
+        <option value="test_unit:integration" />
+        <option value="test_unit:mailer" />
+        <option value="test_unit:model" />
+        <option value="test_unit:observer" />
+        <option value="test_unit:performance" />
         <option value="test_unit:plugin" />
+        <option value="test_unit:scaffold" />
       </list>
     </option>
   </component>
diff --git a/README.md b/README.md
index 3d0b7b9..b5dada9 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 just a silly little site to help run the pinball tournaments at
 [the coin slot](https://thecoinslottc.com/).
 
-currently running on ruby 3.0.2
+currently running on ruby 3.1.0
 
     bundle install
     RAILS_ENV=production bundle exec rails db:migrate