diff --git a/2.4/Dockerfile b/2.4/Dockerfile
index 696b84d03..517bda253 100644
--- a/2.4/Dockerfile
+++ b/2.4/Dockerfile
@@ -54,7 +54,7 @@ RUN set -ex \
 	\
 	&& gem update --system "$RUBYGEMS_VERSION"
 
-ENV BUNDLER_VERSION 1.14.3
+ENV BUNDLER_VERSION 1.14.4
 
 RUN gem install bundler --version "$BUNDLER_VERSION"
 
diff --git a/2.4/alpine/Dockerfile b/2.4/alpine/Dockerfile
index ec7ed28c8..361e93583 100644
--- a/2.4/alpine/Dockerfile
+++ b/2.4/alpine/Dockerfile
@@ -90,7 +90,7 @@ RUN set -ex \
 	\
 	&& gem update --system "$RUBYGEMS_VERSION"
 
-ENV BUNDLER_VERSION 1.14.3
+ENV BUNDLER_VERSION 1.14.4
 
 RUN gem install bundler --version "$BUNDLER_VERSION"
 
diff --git a/2.4/slim/Dockerfile b/2.4/slim/Dockerfile
index 7df36597e..0ebbdf59c 100644
--- a/2.4/slim/Dockerfile
+++ b/2.4/slim/Dockerfile
@@ -77,7 +77,7 @@ RUN set -ex \
 	\
 	&& gem update --system "$RUBYGEMS_VERSION"
 
-ENV BUNDLER_VERSION 1.14.3
+ENV BUNDLER_VERSION 1.14.4
 
 RUN gem install bundler --version "$BUNDLER_VERSION"