diff --git a/2.3/alpine3.4/Dockerfile b/2.3/alpine3.4/Dockerfile
index 56ac9c850..6777708d3 100644
--- a/2.3/alpine3.4/Dockerfile
+++ b/2.3/alpine3.4/Dockerfile
@@ -11,7 +11,7 @@ ENV RUBY_MAJOR 2.3
 ENV RUBY_VERSION 2.3.6
 ENV RUBY_DOWNLOAD_SHA256 e0d969ac22d4a403c1204868bb9c0d068aa35045bb3934cf50b17b7f66059f56
 ENV RUBYGEMS_VERSION 2.7.3
-ENV BUNDLER_VERSION 1.16.0
+ENV BUNDLER_VERSION 1.16.1
 
 # 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/2.3/jessie/Dockerfile b/2.3/jessie/Dockerfile
index 0de53c661..1576944e4 100644
--- a/2.3/jessie/Dockerfile
+++ b/2.3/jessie/Dockerfile
@@ -11,7 +11,7 @@ ENV RUBY_MAJOR 2.3
 ENV RUBY_VERSION 2.3.6
 ENV RUBY_DOWNLOAD_SHA256 e0d969ac22d4a403c1204868bb9c0d068aa35045bb3934cf50b17b7f66059f56
 ENV RUBYGEMS_VERSION 2.7.3
-ENV BUNDLER_VERSION 1.16.0
+ENV BUNDLER_VERSION 1.16.1
 
 # 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/2.3/jessie/slim/Dockerfile b/2.3/jessie/slim/Dockerfile
index 4d62e4f7b..fd0072734 100644
--- a/2.3/jessie/slim/Dockerfile
+++ b/2.3/jessie/slim/Dockerfile
@@ -23,7 +23,7 @@ ENV RUBY_MAJOR 2.3
 ENV RUBY_VERSION 2.3.6
 ENV RUBY_DOWNLOAD_SHA256 e0d969ac22d4a403c1204868bb9c0d068aa35045bb3934cf50b17b7f66059f56
 ENV RUBYGEMS_VERSION 2.7.3
-ENV BUNDLER_VERSION 1.16.0
+ENV BUNDLER_VERSION 1.16.1
 
 # 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