diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index 18647ea..0000000
--- a/Dockerfile
+++ /dev/null
@@ -1,7 +0,0 @@
-FROM ruby:2.6.5
-
-WORKDIR /var/app
-COPY Gemfile .
-RUN bundle install
-
-CMD ["bash"]
diff --git a/Makefile b/Makefile
deleted file mode 100644
index bb59791..0000000
--- a/Makefile
+++ /dev/null
@@ -1,21 +0,0 @@
-.PHONY: all build clean shell test
-
-all: clean build test
-
-build:
-	docker build -t simplybusiness/ruby-dev:2.6.5 .
-
-clean:
-	rm -f *~
-
-shell:
-	docker run -it \
-	-v `pwd`:/var/app \
-	simplybusiness/ruby-dev:2.6.5 \
-	bash
-
-test:
-	docker run -it \
-	-v `pwd`:/var/app \
-	simplybusiness/ruby-dev:2.6.5 \
-	bundle exec rake test
diff --git a/lib/twiglet/version.rb b/lib/twiglet/version.rb
index dc10867..064a928 100644
--- a/lib/twiglet/version.rb
+++ b/lib/twiglet/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Twiglet
-  VERSION = '3.13.3'
+  VERSION = '3.13.4'
 end
diff --git a/mkdocs.yml b/mkdocs.yml
deleted file mode 100644
index 4947049..0000000
--- a/mkdocs.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-site_name: 'Twiglet Docs'
-nav:
-  - Home: index.md
-  - Code of Conduct: CODE_OF_CONDUCT.md
-  - "Why Twiglet?": RATIONALE.md
-
-plugins:
-  - techdocs-core