diff --git a/Gemfile b/Gemfile
index 0a60db2..d7eae8a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,4 @@
 source "https://rubygems.org"
 
-# Specify your gem's dependencies in imbecile.gemspec
-gemspec
-
 gem "rake"
+gem "rspec"
diff --git a/Gemfile.lock b/Gemfile.lock
index 7804ffd..3b312b7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,3 @@
-PATH
-  remote: .
-  specs:
-    imbecile (0.1.0)
-
 GEM
   remote: https://rubygems.org/
   specs:
@@ -26,9 +21,8 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  imbecile!
   rake
-  rspec (~> 3.0)
+  rspec
 
 BUNDLED WITH
    2.4.0.dev
diff --git a/README.md b/README.md
index b7e5854..69d74b7 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
-# Imbecile
+# Propane
 
-Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file `lib/imbecile`. To experiment with that code, run `bin/console` for an interactive prompt.
+Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file `lib/propane`. To experiment with that code, run `bin/console` for an interactive prompt.
 
 TODO: Delete this and the text above, and describe your gem
 
@@ -9,7 +9,7 @@ TODO: Delete this and the text above, and describe your gem
 Add this line to your application's Gemfile:
 
 ```ruby
-gem 'imbecile'
+gem 'propane'
 ```
 
 And then execute:
@@ -18,7 +18,7 @@ And then execute:
 
 Or install it yourself as:
 
-    $ gem install imbecile
+    $ gem install propane
 
 ## Usage
 
@@ -32,7 +32,7 @@ To install this gem onto your local machine, run `bundle exec rake install`. To
 
 ## Contributing
 
-Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/imbecile.
+Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/propane.
 
 
 ## License
diff --git a/Rakefile b/Rakefile
index 3882576..3a3c905 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,4 +1,3 @@
-require "bundler/gem_tasks"
 require "rspec/core/rake_task"
 
 RSpec::Core::RakeTask.new(:spec, :example_pattern) do |task, args|
diff --git a/bin/imbecile b/bin/imbecile
deleted file mode 100755
index 96cbee1..0000000
--- a/bin/imbecile
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/usr/bin/env ruby
-
-require "imbecile"
-
-exit Imbecile::CLI.run(ARGV.dup)
diff --git a/bin/propane b/bin/propane
new file mode 100755
index 0000000..75e300a
--- /dev/null
+++ b/bin/propane
@@ -0,0 +1,5 @@
+#!/usr/bin/env ruby
+
+require "propane"
+
+exit Propane::CLI.run(ARGV.dup)
diff --git a/imbecile.gemspec b/imbecile.gemspec
deleted file mode 100644
index 59ceb58..0000000
--- a/imbecile.gemspec
+++ /dev/null
@@ -1,31 +0,0 @@
-require_relative 'lib/imbecile/version'
-
-Gem::Specification.new do |spec|
-  spec.name          = "imbecile"
-  spec.version       = Imbecile::VERSION
-  spec.authors       = ["Josh Holtrop"]
-  spec.email         = ["jholtrop@gmail.com"]
-
-  spec.summary       = %q{Imbecile is a LALR(1) parser generator targeting C and D}
-  spec.description   = %q{Imbecile is a LALR(1) parser generator targeting C and D.}
-  spec.homepage      = "http://todo.com/"
-  spec.license       = "MIT"
-  spec.required_ruby_version = Gem::Requirement.new(">= 2.3.0")
-
-  spec.metadata["allowed_push_host"] = "TODO: Set to 'http://mygemserver.com'"
-
-  spec.metadata["homepage_uri"] = spec.homepage
-  spec.metadata["source_code_uri"] = "http://todo.com/"
-  spec.metadata["changelog_uri"] = "http://todo.com/"
-
-  # Specify which files should be added to the gem when it is released.
-  # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
-  spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
-  end
-  spec.bindir        = "exe"
-  spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
-  spec.require_paths = ["lib"]
-
-  spec.add_development_dependency "rspec", "~> 3.0"
-end
diff --git a/imbecile.sh b/imbecile.sh
deleted file mode 100755
index e6445f5..0000000
--- a/imbecile.sh
+++ /dev/null
@@ -1,2 +0,0 @@
-#!/bin/sh
-exec bundle exec ruby bin/imbecile "$@"
diff --git a/lib/imbecile.rb b/lib/propane.rb
similarity index 80%
rename from lib/imbecile.rb
rename to lib/propane.rb
index 3b79797..7e1edc0 100644
--- a/lib/imbecile.rb
+++ b/lib/propane.rb
@@ -1,23 +1,23 @@
 require "erb"
 require "set"
-require_relative "imbecile/cli"
-require_relative "imbecile/code_point_range"
-require_relative "imbecile/fa"
-require_relative "imbecile/fa/state"
-require_relative "imbecile/fa/state/transition"
-require_relative "imbecile/lexer"
-require_relative "imbecile/lexer/dfa"
-require_relative "imbecile/parser"
-require_relative "imbecile/parser/item"
-require_relative "imbecile/parser/item_set"
-require_relative "imbecile/regex"
-require_relative "imbecile/regex/nfa"
-require_relative "imbecile/regex/unit"
-require_relative "imbecile/rule"
-require_relative "imbecile/token"
-require_relative "imbecile/version"
+require_relative "propane/cli"
+require_relative "propane/code_point_range"
+require_relative "propane/fa"
+require_relative "propane/fa/state"
+require_relative "propane/fa/state/transition"
+require_relative "propane/lexer"
+require_relative "propane/lexer/dfa"
+require_relative "propane/parser"
+require_relative "propane/parser/item"
+require_relative "propane/parser/item_set"
+require_relative "propane/regex"
+require_relative "propane/regex/nfa"
+require_relative "propane/regex/unit"
+require_relative "propane/rule"
+require_relative "propane/token"
+require_relative "propane/version"
 
-class Imbecile
+class Propane
 
   # EOF.
   TOKEN_EOF = 0xFFFFFFFC
@@ -123,8 +123,8 @@ class Imbecile
 
     def run(input_file, output_file, log_file)
       begin
-        imbecile = Imbecile.new(File.read(input_file))
-        imbecile.generate(output_file, log_file)
+        propane = Propane.new(File.read(input_file))
+        propane.generate(output_file, log_file)
       rescue Error => e
         $stderr.puts e.message
         return 2
diff --git a/lib/imbecile/cli.rb b/lib/propane/cli.rb
similarity index 91%
rename from lib/imbecile/cli.rb
rename to lib/propane/cli.rb
index 66b0679..2edb5a8 100644
--- a/lib/imbecile/cli.rb
+++ b/lib/propane/cli.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   module CLI
 
     USAGE = <<EOF
@@ -24,7 +24,7 @@ EOF
               log_file = args[i]
             end
           when "--version"
-            puts "imbecile v#{VERSION}"
+            puts "propane v#{VERSION}"
             return 0
           when "-h", "--help"
             puts USAGE
@@ -45,7 +45,7 @@ EOF
           $stderr.puts "Error: cannot read #{params[0]}"
           return 2
         end
-        Imbecile.run(*params, log_file)
+        Propane.run(*params, log_file)
       end
 
     end
diff --git a/lib/imbecile/code_point_range.rb b/lib/propane/code_point_range.rb
similarity index 99%
rename from lib/imbecile/code_point_range.rb
rename to lib/propane/code_point_range.rb
index a83a4aa..98a55e7 100644
--- a/lib/imbecile/code_point_range.rb
+++ b/lib/propane/code_point_range.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   class CodePointRange
 
     MAX_CODE_POINT = 0xFFFFFFFF
diff --git a/lib/imbecile/fa.rb b/lib/propane/fa.rb
similarity index 98%
rename from lib/imbecile/fa.rb
rename to lib/propane/fa.rb
index 63ce8d7..ce4f350 100644
--- a/lib/imbecile/fa.rb
+++ b/lib/propane/fa.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
 
   class FA
 
diff --git a/lib/imbecile/fa/state.rb b/lib/propane/fa/state.rb
similarity index 98%
rename from lib/imbecile/fa/state.rb
rename to lib/propane/fa/state.rb
index e1bb44b..226823b 100644
--- a/lib/imbecile/fa/state.rb
+++ b/lib/propane/fa/state.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   class FA
 
     class State
diff --git a/lib/imbecile/fa/state/transition.rb b/lib/propane/fa/state/transition.rb
similarity index 96%
rename from lib/imbecile/fa/state/transition.rb
rename to lib/propane/fa/state/transition.rb
index 8a6a1f5..2febb98 100644
--- a/lib/imbecile/fa/state/transition.rb
+++ b/lib/propane/fa/state/transition.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   class FA
     class State
 
diff --git a/lib/imbecile/lexer.rb b/lib/propane/lexer.rb
similarity index 91%
rename from lib/imbecile/lexer.rb
rename to lib/propane/lexer.rb
index 0115ccc..4543cd8 100644
--- a/lib/imbecile/lexer.rb
+++ b/lib/propane/lexer.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   class Lexer
 
     # @return [DFA]
diff --git a/lib/imbecile/lexer/dfa.rb b/lib/propane/lexer/dfa.rb
similarity index 99%
rename from lib/imbecile/lexer/dfa.rb
rename to lib/propane/lexer/dfa.rb
index 137fcda..8e025e7 100644
--- a/lib/imbecile/lexer/dfa.rb
+++ b/lib/propane/lexer/dfa.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   class Lexer
 
     class DFA < FA
diff --git a/lib/imbecile/parser.rb b/lib/propane/parser.rb
similarity index 99%
rename from lib/imbecile/parser.rb
rename to lib/propane/parser.rb
index d960011..1a93d24 100644
--- a/lib/imbecile/parser.rb
+++ b/lib/propane/parser.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
 
   class Parser
 
diff --git a/lib/imbecile/parser/item.rb b/lib/propane/parser/item.rb
similarity index 98%
rename from lib/imbecile/parser/item.rb
rename to lib/propane/parser/item.rb
index 6ca5e00..29792af 100644
--- a/lib/imbecile/parser/item.rb
+++ b/lib/propane/parser/item.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   class Parser
 
     class Item
diff --git a/lib/imbecile/parser/item_set.rb b/lib/propane/parser/item_set.rb
similarity index 98%
rename from lib/imbecile/parser/item_set.rb
rename to lib/propane/parser/item_set.rb
index 99d6d9d..d34116f 100644
--- a/lib/imbecile/parser/item_set.rb
+++ b/lib/propane/parser/item_set.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   class Parser
 
     class ItemSet
diff --git a/lib/imbecile/regex.rb b/lib/propane/regex.rb
similarity index 99%
rename from lib/imbecile/regex.rb
rename to lib/propane/regex.rb
index c62d45c..cd1fdae 100644
--- a/lib/imbecile/regex.rb
+++ b/lib/propane/regex.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   class Regex
 
     attr_reader :unit
diff --git a/lib/imbecile/regex/nfa.rb b/lib/propane/regex/nfa.rb
similarity index 95%
rename from lib/imbecile/regex/nfa.rb
rename to lib/propane/regex/nfa.rb
index 4b89c8e..b38c553 100644
--- a/lib/imbecile/regex/nfa.rb
+++ b/lib/propane/regex/nfa.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   class Regex
 
     class NFA < FA
diff --git a/lib/imbecile/regex/unit.rb b/lib/propane/regex/unit.rb
similarity index 99%
rename from lib/imbecile/regex/unit.rb
rename to lib/propane/regex/unit.rb
index db12c2a..a286f6c 100644
--- a/lib/imbecile/regex/unit.rb
+++ b/lib/propane/regex/unit.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   class Regex
 
     class Unit
diff --git a/lib/imbecile/rule.rb b/lib/propane/rule.rb
similarity index 97%
rename from lib/imbecile/rule.rb
rename to lib/propane/rule.rb
index f0e2687..e7edfdc 100644
--- a/lib/imbecile/rule.rb
+++ b/lib/propane/rule.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
 
   class Rule
 
diff --git a/lib/imbecile/token.rb b/lib/propane/token.rb
similarity index 97%
rename from lib/imbecile/token.rb
rename to lib/propane/token.rb
index b7607c4..1fdb05e 100644
--- a/lib/imbecile/token.rb
+++ b/lib/propane/token.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
 
   class Token
 
diff --git a/lib/imbecile/version.rb b/lib/propane/version.rb
similarity index 61%
rename from lib/imbecile/version.rb
rename to lib/propane/version.rb
index 38d1097..13a2bd0 100644
--- a/lib/imbecile/version.rb
+++ b/lib/propane/version.rb
@@ -1,3 +1,3 @@
-class Imbecile
+class Propane
   VERSION = "0.1.0"
 end
diff --git a/propane.sh b/propane.sh
new file mode 100755
index 0000000..8d6a030
--- /dev/null
+++ b/propane.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec bundle exec ruby -Ilib bin/propane "$@"
diff --git a/spec/imbecile/code_point_range_spec.rb b/spec/propane/code_point_range_spec.rb
similarity index 99%
rename from spec/imbecile/code_point_range_spec.rb
rename to spec/propane/code_point_range_spec.rb
index ec8e2e0..162d7cf 100644
--- a/spec/imbecile/code_point_range_spec.rb
+++ b/spec/propane/code_point_range_spec.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   describe CodePointRange do
 
     describe "#<=>" do
diff --git a/spec/imbecile/lexer/dfa_spec.rb b/spec/propane/lexer/dfa_spec.rb
similarity index 93%
rename from spec/imbecile/lexer/dfa_spec.rb
rename to spec/propane/lexer/dfa_spec.rb
index d692e0e..7adf125 100644
--- a/spec/imbecile/lexer/dfa_spec.rb
+++ b/spec/propane/lexer/dfa_spec.rb
@@ -50,13 +50,13 @@ class TestLexer
 end
 
 def run(grammar, input)
-  imbecile = Imbecile.new(grammar)
-  token_dfa = Imbecile::Lexer::DFA.new(imbecile.instance_variable_get(:@tokens))
+  propane = Propane.new(grammar)
+  token_dfa = Propane::Lexer::DFA.new(propane.instance_variable_get(:@tokens))
   test_lexer = TestLexer.new(token_dfa)
   test_lexer.lex(input)
 end
 
-describe Imbecile::Lexer::DFA do
+describe Propane::Lexer::DFA do
   it "lexes a simple token" do
     expect(run(<<EOF, "foo")).to eq [["foo", "foo"]]
 token foo
diff --git a/spec/imbecile/parser/item_spec.rb b/spec/propane/parser/item_spec.rb
similarity index 95%
rename from spec/imbecile/parser/item_spec.rb
rename to spec/propane/parser/item_spec.rb
index aefc461..164f2c7 100644
--- a/spec/imbecile/parser/item_spec.rb
+++ b/spec/propane/parser/item_spec.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   class Parser
 
     describe Item do
diff --git a/spec/imbecile/regex_spec.rb b/spec/propane/regex_spec.rb
similarity index 99%
rename from spec/imbecile/regex_spec.rb
rename to spec/propane/regex_spec.rb
index cecf2c4..c85a640 100644
--- a/spec/imbecile/regex_spec.rb
+++ b/spec/propane/regex_spec.rb
@@ -1,4 +1,4 @@
-class Imbecile
+class Propane
   RSpec.describe Regex do
 
     it "parses an empty expression" do
diff --git a/spec/imbecile_spec.rb b/spec/propane_spec.rb
similarity index 93%
rename from spec/imbecile_spec.rb
rename to spec/propane_spec.rb
index 2a6b519..0d5bf47 100644
--- a/spec/imbecile_spec.rb
+++ b/spec/propane_spec.rb
@@ -1,12 +1,12 @@
 require "fileutils"
 
-describe Imbecile do
+describe Propane do
   def write_grammar(grammar)
     File.write("spec/run/testparser.i", grammar)
   end
 
   def build_parser
-    result = system(*%w[./imbecile.sh spec/run/testparser.i spec/run/testparser.d])
+    result = system(*%w[./propane.sh spec/run/testparser.i spec/run/testparser.d])
     expect(result).to be_truthy
   end
 
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 98461d1..9835d82 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,5 +1,5 @@
 require "bundler/setup"
-require "imbecile"
+require "propane"
 
 RSpec.configure do |config|
   # Enable flags like --only-failures and --next-failure