diff --git a/.ruby-version b/.ruby-version
index 57cf282eb..338a5b5d8 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.6.5
+2.6.6
diff --git a/Dockerfile b/Dockerfile
index 7a1b5ace4..c9dffe506 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.6.5
+FROM ruby:2.6.6
 RUN apt-get update -qq && apt-get upgrade -y
 RUN apt-get install -y build-essential nodejs && apt-get clean
 RUN gem install foreman
diff --git a/Gemfile.lock b/Gemfile.lock
index 32de2da0e..68a071edd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -388,7 +388,7 @@ DEPENDENCIES
   wraith (~> 4.2)
 
 RUBY VERSION
-   ruby 2.6.5p114
+   ruby 2.6.6
 
 BUNDLED WITH
    1.17.3