diff --git a/Dockerfile b/Dockerfile
index fd8d4ef67f675898e73ed66db793b4a68110ed14..32ba910555fb59270b482ea703ec39bc81c7e57b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.7.5-alpine3.14 AS base
+FROM ruby:2.7.7-alpine3.16 AS base
 
 # Set a variable for the install location.
 ARG RAILS_ROOT=/usr/src/app
diff --git a/Gemfile b/Gemfile
index 1991b3dfd226ad0962816a893ddb1bfe9e5f7005..879ca47c197c1c6e51c25ca14ec4546b7bbe6d34 100644
--- a/Gemfile
+++ b/Gemfile
@@ -59,7 +59,7 @@ end
 
 group :development, :test do
   gem 'byebug', '~> 11.1', platform: :mri
-  gem 'dotenv-rails', '~> 2.7', '>= 2.7.6'
+  gem 'dotenv-rails', '~> 2.8', '>= 2.8.1'
 end
 
 group :test do
diff --git a/Gemfile.lock b/Gemfile.lock
index 0b428ff3de55e60113709f48df9827122100c76e..9e1518c0277300d19b95760105f865d9e5c81489 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -507,7 +507,7 @@ DEPENDENCIES
   byebug (~> 11.1)
   cancancan (~> 2.3.0)
   coveralls (~> 0.8.23)
-  dotenv-rails (~> 2.7, >= 2.7.6)
+  dotenv-rails (~> 2.8, >= 2.8.1)
   factory_bot_rails (~> 6.2, >= 6.2.0)
   faker (~> 2.16)
   font-awesome-sass (~> 5.9.0)