diff --git a/2.4/Dockerfile b/2.4/Dockerfile
index 065f6592f..d7d9d737a 100644
--- a/2.4/Dockerfile
+++ b/2.4/Dockerfile
@@ -10,7 +10,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.4
 ENV RUBY_VERSION 2.4.1
 ENV RUBY_DOWNLOAD_SHA256 4fc8a9992de3e90191de369270ea4b6c1b171b7941743614cc50822ddc1fe654
-ENV RUBYGEMS_VERSION 2.6.11
+ENV RUBYGEMS_VERSION 2.6.12
 
 # some of ruby's build scripts are written in ruby
 #   we purge system ruby later to make sure our final image uses what we just built
diff --git a/2.4/alpine/Dockerfile b/2.4/alpine/Dockerfile
index bf7d706bb..b23c37e0c 100644
--- a/2.4/alpine/Dockerfile
+++ b/2.4/alpine/Dockerfile
@@ -10,7 +10,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.4
 ENV RUBY_VERSION 2.4.1
 ENV RUBY_DOWNLOAD_SHA256 4fc8a9992de3e90191de369270ea4b6c1b171b7941743614cc50822ddc1fe654
-ENV RUBYGEMS_VERSION 2.6.11
+ENV RUBYGEMS_VERSION 2.6.12
 
 # some of ruby's build scripts are written in ruby
 #   we purge system ruby later to make sure our final image uses what we just built
diff --git a/2.4/slim/Dockerfile b/2.4/slim/Dockerfile
index 6ccc727fa..0abf42cbd 100644
--- a/2.4/slim/Dockerfile
+++ b/2.4/slim/Dockerfile
@@ -22,7 +22,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.4
 ENV RUBY_VERSION 2.4.1
 ENV RUBY_DOWNLOAD_SHA256 4fc8a9992de3e90191de369270ea4b6c1b171b7941743614cc50822ddc1fe654
-ENV RUBYGEMS_VERSION 2.6.11
+ENV RUBYGEMS_VERSION 2.6.12
 
 # some of ruby's build scripts are written in ruby
 #   we purge system ruby later to make sure our final image uses what we just built