diff --git a/2.4/alpine3.4/Dockerfile b/2.4/alpine3.4/Dockerfile
index 3defa1532..e8acd9b82 100644
--- a/2.4/alpine3.4/Dockerfile
+++ b/2.4/alpine3.4/Dockerfile
@@ -10,7 +10,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.4
 ENV RUBY_VERSION 2.4.3
 ENV RUBY_DOWNLOAD_SHA256 23677d40bf3b7621ba64593c978df40b1e026d8653c74a0599f0ead78ed92b51
-ENV RUBYGEMS_VERSION 2.7.5
+ENV RUBYGEMS_VERSION 2.7.6
 ENV BUNDLER_VERSION 1.16.1
 
 # some of ruby's build scripts are written in ruby
diff --git a/2.4/alpine3.6/Dockerfile b/2.4/alpine3.6/Dockerfile
index 0097f6595..0c7953736 100644
--- a/2.4/alpine3.6/Dockerfile
+++ b/2.4/alpine3.6/Dockerfile
@@ -10,7 +10,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.4
 ENV RUBY_VERSION 2.4.3
 ENV RUBY_DOWNLOAD_SHA256 23677d40bf3b7621ba64593c978df40b1e026d8653c74a0599f0ead78ed92b51
-ENV RUBYGEMS_VERSION 2.7.5
+ENV RUBYGEMS_VERSION 2.7.6
 ENV BUNDLER_VERSION 1.16.1
 
 # some of ruby's build scripts are written in ruby
diff --git a/2.4/alpine3.7/Dockerfile b/2.4/alpine3.7/Dockerfile
index aae71ccee..fdc456a82 100644
--- a/2.4/alpine3.7/Dockerfile
+++ b/2.4/alpine3.7/Dockerfile
@@ -10,7 +10,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.4
 ENV RUBY_VERSION 2.4.3
 ENV RUBY_DOWNLOAD_SHA256 23677d40bf3b7621ba64593c978df40b1e026d8653c74a0599f0ead78ed92b51
-ENV RUBYGEMS_VERSION 2.7.5
+ENV RUBYGEMS_VERSION 2.7.6
 ENV BUNDLER_VERSION 1.16.1
 
 # some of ruby's build scripts are written in ruby
diff --git a/2.4/jessie/Dockerfile b/2.4/jessie/Dockerfile
index af291eb2f..04b703128 100644
--- a/2.4/jessie/Dockerfile
+++ b/2.4/jessie/Dockerfile
@@ -10,7 +10,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.4
 ENV RUBY_VERSION 2.4.3
 ENV RUBY_DOWNLOAD_SHA256 23677d40bf3b7621ba64593c978df40b1e026d8653c74a0599f0ead78ed92b51
-ENV RUBYGEMS_VERSION 2.7.5
+ENV RUBYGEMS_VERSION 2.7.6
 ENV BUNDLER_VERSION 1.16.1
 
 # some of ruby's build scripts are written in ruby
diff --git a/2.4/jessie/slim/Dockerfile b/2.4/jessie/slim/Dockerfile
index 8fb9adc6a..ac376bf6d 100644
--- a/2.4/jessie/slim/Dockerfile
+++ b/2.4/jessie/slim/Dockerfile
@@ -22,7 +22,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.4
 ENV RUBY_VERSION 2.4.3
 ENV RUBY_DOWNLOAD_SHA256 23677d40bf3b7621ba64593c978df40b1e026d8653c74a0599f0ead78ed92b51
-ENV RUBYGEMS_VERSION 2.7.5
+ENV RUBYGEMS_VERSION 2.7.6
 ENV BUNDLER_VERSION 1.16.1
 
 # some of ruby's build scripts are written in ruby
diff --git a/2.4/stretch/Dockerfile b/2.4/stretch/Dockerfile
index ce23a72bf..b3a527b83 100644
--- a/2.4/stretch/Dockerfile
+++ b/2.4/stretch/Dockerfile
@@ -10,7 +10,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.4
 ENV RUBY_VERSION 2.4.3
 ENV RUBY_DOWNLOAD_SHA256 23677d40bf3b7621ba64593c978df40b1e026d8653c74a0599f0ead78ed92b51
-ENV RUBYGEMS_VERSION 2.7.5
+ENV RUBYGEMS_VERSION 2.7.6
 ENV BUNDLER_VERSION 1.16.1
 
 # some of ruby's build scripts are written in ruby
diff --git a/2.4/stretch/slim/Dockerfile b/2.4/stretch/slim/Dockerfile
index d7b3a21d1..536e67a2d 100644
--- a/2.4/stretch/slim/Dockerfile
+++ b/2.4/stretch/slim/Dockerfile
@@ -22,7 +22,7 @@ RUN mkdir -p /usr/local/etc \
 ENV RUBY_MAJOR 2.4
 ENV RUBY_VERSION 2.4.3
 ENV RUBY_DOWNLOAD_SHA256 23677d40bf3b7621ba64593c978df40b1e026d8653c74a0599f0ead78ed92b51
-ENV RUBYGEMS_VERSION 2.7.5
+ENV RUBYGEMS_VERSION 2.7.6
 ENV BUNDLER_VERSION 1.16.1
 
 # some of ruby's build scripts are written in ruby