Ruby Version Incorrect - ruby-on-rails

Question

I think I've got a simple problem but I've spent hours searching for the answer. It's taken me a while to get the correct version of ruby installed and recognized when running ruby -v (it had previously been v2.5.1, but for some reason I still can't use the command bundle install. It tells me I've got the wrong version of ruby... but this doesn't appear to be true???
I am trying to deploy a Ruby on Rails repository to an EC2 instance.
Any help would be much appreciated! Thanks in advance.
I have ran these commands from within my repository directory:
ruby -v
ruby 2.5.3p105 (2018-10-18 revision 65156) [x86_64-linux]
bundle install
Your Ruby version is 2.5.1, but your Gemfile specified 2.5.3
.bashrc and .bash_profile have the following commands in them:
export PATH="$HOME/.rbenv/bin:~/.rbenv/shims:$PATH"
export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"
Available versions:
~/.rbenv/versions$ ls
2.5.3
irb
irb(main):001:0> RUBY_VERSION
=> "2.5.3"
rbenv version
2.5.3 (set by /home/ubuntu/.rbenv/version)
whereis ruby
ruby: /usr/bin/ruby
/usr/bin/ruby2.5
/usr/lib/x86_64-linux-gnu/ruby
/usr/lib/ruby
/home/ubuntu/.rbenv/shims/ruby
/snap/bin/ruby.rake /snap/bin/ruby.bundle
/snap/bin/ruby.gem
/snap/bin/ruby.env
/snap/bin/ruby.rdoc
/snap/bin/ruby
/snap/bin/ruby.irb
/snap/bin/ruby.ri
/usr/share/man/man1/ruby.1.gz
gem env
RubyGems Environment:
- RUBYGEMS VERSION: 2.7.6
- RUBY VERSION: 2.5.3 (2018-10-18 patchlevel 105) [x86_64-linux]
- INSTALLATION DIRECTORY: /home/ubuntu/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0
- USER INSTALLATION DIRECTORY: /home/ubuntu/.gem/ruby/2.5.0
- RUBY EXECUTABLE: /home/ubuntu/.rbenv/versions/2.5.3/bin/ruby
- EXECUTABLE DIRECTORY: /home/ubuntu/.rbenv/versions/2.5.3/bin
- SPEC CACHE DIRECTORY: /home/ubuntu/.gem/specs
- SYSTEM CONFIGURATION DIRECTORY: /home/ubuntu/.rbenv/versions/2.5.3/etc
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-linux
- GEM PATHS:
- /home/ubuntu/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0
- /home/ubuntu/.gem/ruby/2.5.0
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :backtrace => false
- :bulk_threshold => 1000
- "“gem" => "--no-document”"
- REMOTE SOURCES:
- https://rubygems.org/
- SHELL PATH:
- /home/ubuntu/.rbenv/versions/2.5.3/bin
- /home/ubuntu/.rbenv/libexec
- /home/ubuntu/.rbenv/plugins/ruby-build/bin
- /home/ubuntu/.rbenv/shims
- /home/ubuntu/.rbenv/bin
- ~/.rbenv/shims
- /usr/local/sbin
- /usr/local/bin
- /usr/sbin
- /usr/bin
- /sbin
- /bin
- /usr/games
- /usr/local

Answer 1

You can try to force an update to your Ruby version in the Gemfile.lock:
bundle update --ruby in the same folder as the Gemfile.
If that didn't work you could also try a:
gem install bundler
Making sure you're in a directory/project that is using ruby 2.5.3 (i.e double check with ruby -v).
Finally you can do a manual rbenv rehash to check it's up-to-date:
rbenv rehash