diff --git a/Dockerfile b/Dockerfile
index a5df110b..9592b5ce 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 # el mismo repositorio de trabajo.  Cuando tengamos CI/CD algunas cosas
 # como el tarball van a tener que cambiar porque ya vamos a haber hecho
 # un clone/pull limpio.
-FROM alpine:3.11.6 AS build
+FROM alpine:3.12 AS build
 MAINTAINER "f <f@sutty.nl>"
 
 ARG RAILS_MASTER_KEY
@@ -13,14 +13,15 @@ ENV RAILS_ENV production
 ENV RAILS_MASTER_KEY=$RAILS_MASTER_KEY
 
 RUN apk add --no-cache libxslt libxml2 tzdata ruby ruby-bundler ruby-json ruby-bigdecimal ruby-rake
-RUN apk add --no-cache postgresql-libs git yarn brotli libssh2 python
+RUN apk add --no-cache postgresql-libs git yarn brotli libssh2 python3
 
-RUN test "2.6.6" = `ruby -e 'puts RUBY_VERSION'`
+RUN test "2.7.1" = `ruby -e 'puts RUBY_VERSION'`
 
 # https://github.com/rubygems/rubygems/issues/2918
 # https://gitlab.alpinelinux.org/alpine/aports/issues/10808
+RUN apk add --no-cache patch
 COPY ./rubygems-platform-musl.patch /tmp/
-RUN cd /usr/lib/ruby/2.6.0 && patch -Np 0 -i /tmp/rubygems-platform-musl.patch
+RUN cd /usr/lib/ruby/2.7.0 && patch -Np 0 -i /tmp/rubygems-platform-musl.patch
 
 # Agregar el usuario
 RUN addgroup -g 82 -S www-data
@@ -38,7 +39,7 @@ COPY --chown=app:www-data ./Gemfile .
 COPY --chown=app:www-data ./Gemfile.lock .
 RUN bundle install --no-cache --path=./vendor --without='test development'
 # Vaciar la caché
-RUN rm vendor/ruby/2.6.0/cache/*.gem
+RUN rm vendor/ruby/2.7.0/cache/*.gem
 
 # Copiar el repositorio git
 COPY --chown=app:www-data ./.git/ ./.git/
@@ -64,7 +65,7 @@ RUN bundle clean
 RUN rm -rf ./node_modules ./tmp/cache ./.git
 
 # Contenedor final
-FROM sutty/monit:3.11.6
+FROM sutty/monit:latest
 ENV RAILS_ENV production
 
 # Pandoc
@@ -77,12 +78,12 @@ RUN apk add --no-cache postgresql-libs libssh2 file rsync git jpegoptim vips
 RUN apk add --no-cache ffmpeg imagemagick pandoc tectonic oxipng jemalloc
 
 # Chequear que la versión de ruby sea la correcta
-RUN test "2.6.6" = `ruby -e 'puts RUBY_VERSION'`
+RUN test "2.7.1" = `ruby -e 'puts RUBY_VERSION'`
 
 # https://github.com/rubygems/rubygems/issues/2918
 # https://gitlab.alpinelinux.org/alpine/aports/issues/10808
 COPY ./rubygems-platform-musl.patch /tmp/
-RUN cd /usr/lib/ruby/2.6.0 && patch -Np 0 -i /tmp/rubygems-platform-musl.patch
+RUN cd /usr/lib/ruby/2.7.0 && patch -Np 0 -i /tmp/rubygems-platform-musl.patch
 
 # Necesitamos yarn para que Jekyll pueda generar los sitios
 # XXX: Eliminarlo cuando extraigamos la generación de sitios del proceso
diff --git a/Gemfile b/Gemfile
index 9fb6e805..bddf7448 100644
--- a/Gemfile
+++ b/Gemfile
@@ -15,7 +15,7 @@ git_source(:github) do |repo_name|
 end
 
 # Cambiar en Dockerfile también
-ruby '2.6.6'
+ruby '2.7.1'
 
 gem 'dotenv-rails', require: 'dotenv/rails-now'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 456a54c2..63a4d1f3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -627,7 +627,7 @@ DEPENDENCIES
   yaml_db!
 
 RUBY VERSION
-   ruby 2.6.6p146
+   ruby 2.7.1p83
 
 BUNDLED WITH
    2.1.4
diff --git a/rubygems-platform-musl.patch b/rubygems-platform-musl.patch
index 40347041..d6db223d 100644
--- a/rubygems-platform-musl.patch
+++ b/rubygems-platform-musl.patch
@@ -1,14 +1,3 @@
---- rubygems/platform.rb.orig
-+++ rubygems/platform.rb
-@@ -89,7 +89,7 @@
-                       when /^dalvik(\d+)?$/ then        [ 'dalvik',    $1  ]
-                       when /^dotnet$/ then              [ 'dotnet',    nil ]
-                       when /^dotnet([\d.]*)/ then       [ 'dotnet',    $1  ]
--                      when /linux/ then                 [ 'linux',     $1  ]
-+                      when /linux-?(\w+)?/ then         [ 'linux',     $1  ]
-                       when /mingw32/ then               [ 'mingw32',   nil ]
-                       when /(mswin\d+)(\_(\d+))?/ then
-                         os, version = $1, $3
 --- rubygems.rb.orig
 +++ rubygems.rb
 @@ -764,10 +764,7 @@