diff --git a/2.3/alpine3.4/Dockerfile b/2.3/alpine3.4/Dockerfile
index 4aa1b00fc..b8df349cc 100644
--- a/2.3/alpine3.4/Dockerfile
+++ b/2.3/alpine3.4/Dockerfile
@@ -10,7 +10,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.3
 ENV RUBY_VERSION 2.3.5
 ENV RUBY_DOWNLOAD_SHA256 7d3a7dabb190c2da06c963063342ca9a214bcd26f2158e904f0ec059b065ffda
-ENV RUBYGEMS_VERSION 2.7.0
+ENV RUBYGEMS_VERSION 2.7.2
 ENV BUNDLER_VERSION 1.16.0
 
 # some of ruby's build scripts are written in ruby
diff --git a/2.3/jessie/Dockerfile b/2.3/jessie/Dockerfile
index 8b3519112..7e2f2f40d 100644
--- a/2.3/jessie/Dockerfile
+++ b/2.3/jessie/Dockerfile
@@ -10,7 +10,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.3
 ENV RUBY_VERSION 2.3.5
 ENV RUBY_DOWNLOAD_SHA256 7d3a7dabb190c2da06c963063342ca9a214bcd26f2158e904f0ec059b065ffda
-ENV RUBYGEMS_VERSION 2.7.0
+ENV RUBYGEMS_VERSION 2.7.2
 ENV BUNDLER_VERSION 1.16.0
 
 # some of ruby's build scripts are written in ruby
diff --git a/2.3/jessie/slim/Dockerfile b/2.3/jessie/slim/Dockerfile
index 95e9a9eb4..c28833ec4 100644
--- a/2.3/jessie/slim/Dockerfile
+++ b/2.3/jessie/slim/Dockerfile
@@ -22,7 +22,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.3
 ENV RUBY_VERSION 2.3.5
 ENV RUBY_DOWNLOAD_SHA256 7d3a7dabb190c2da06c963063342ca9a214bcd26f2158e904f0ec059b065ffda
-ENV RUBYGEMS_VERSION 2.7.0
+ENV RUBYGEMS_VERSION 2.7.2
 ENV BUNDLER_VERSION 1.16.0
 
 # some of ruby's build scripts are written in ruby