diff --git a/2.3/Dockerfile b/2.3/Dockerfile
index 85bc08c0d..8238c1a1d 100644
--- a/2.3/Dockerfile
+++ b/2.3/Dockerfile
@@ -59,7 +59,7 @@ RUN set -ex \
 	\
 	&& gem update --system "$RUBYGEMS_VERSION"
 
-ENV BUNDLER_VERSION 1.15.1
+ENV BUNDLER_VERSION 1.15.2
 
 RUN gem install bundler --version "$BUNDLER_VERSION"
 
diff --git a/2.3/alpine/Dockerfile b/2.3/alpine/Dockerfile
index 5cc106887..df57e8645 100644
--- a/2.3/alpine/Dockerfile
+++ b/2.3/alpine/Dockerfile
@@ -95,7 +95,7 @@ RUN set -ex \
 	\
 	&& gem update --system "$RUBYGEMS_VERSION"
 
-ENV BUNDLER_VERSION 1.15.1
+ENV BUNDLER_VERSION 1.15.2
 
 RUN gem install bundler --version "$BUNDLER_VERSION"
 
diff --git a/2.3/slim/Dockerfile b/2.3/slim/Dockerfile
index 03ebd2591..b2a9a9964 100644
--- a/2.3/slim/Dockerfile
+++ b/2.3/slim/Dockerfile
@@ -82,7 +82,7 @@ RUN set -ex \
 	\
 	&& gem update --system "$RUBYGEMS_VERSION"
 
-ENV BUNDLER_VERSION 1.15.1
+ENV BUNDLER_VERSION 1.15.2
 
 RUN gem install bundler --version "$BUNDLER_VERSION"