diff --git a/2.2/alpine3.4/Dockerfile b/2.2/alpine3.4/Dockerfile
index fa7698e56..d1aea946d 100644
--- a/2.2/alpine3.4/Dockerfile
+++ b/2.2/alpine3.4/Dockerfile
@@ -10,7 +10,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.2
 ENV RUBY_VERSION 2.2.8
 ENV RUBY_DOWNLOAD_SHA256 37eafc15037396c26870f6a6c5bcd0658d14b46cd5e191a3b56d89dd22d561b0
-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/2.2/jessie/Dockerfile b/2.2/jessie/Dockerfile
index 3c4c62090..bc815e0a4 100644
--- a/2.2/jessie/Dockerfile
+++ b/2.2/jessie/Dockerfile
@@ -10,7 +10,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.2
 ENV RUBY_VERSION 2.2.8
 ENV RUBY_DOWNLOAD_SHA256 37eafc15037396c26870f6a6c5bcd0658d14b46cd5e191a3b56d89dd22d561b0
-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/2.2/jessie/slim/Dockerfile b/2.2/jessie/slim/Dockerfile
index 7e87b96ff..280be68c0 100644
--- a/2.2/jessie/slim/Dockerfile
+++ b/2.2/jessie/slim/Dockerfile
@@ -22,7 +22,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.2
 ENV RUBY_VERSION 2.2.8
 ENV RUBY_DOWNLOAD_SHA256 37eafc15037396c26870f6a6c5bcd0658d14b46cd5e191a3b56d89dd22d561b0
-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