diff --git a/bitnami/ruby/2.1/debian-9/Dockerfile b/bitnami/ruby/2.1/debian-9/Dockerfile
index ae63568565c1..6f57e58f2e67 100644
--- a/bitnami/ruby/2.1/debian-9/Dockerfile
+++ b/bitnami/ruby/2.1/debian-9/Dockerfile
@@ -10,7 +10,7 @@ RUN wget -nc -P /tmp/bitnami/pkg/cache/ https://downloads.bitnami.com/files/stac
 RUN /opt/bitnami/ruby/bin/gem install bundler
 
 ENV BITNAMI_APP_NAME="ruby" \
-    BITNAMI_IMAGE_VERSION="2.1.10-debian-9-r3" \
+    BITNAMI_IMAGE_VERSION="2.1.10-debian-9-r4" \
     PATH="/opt/bitnami/ruby/bin:$PATH"
 
 EXPOSE 3000
diff --git a/bitnami/ruby/2.1/debian-9/prod/Dockerfile b/bitnami/ruby/2.1/debian-9/prod/Dockerfile
index e6608743b59d..d6e49846bb69 100644
--- a/bitnami/ruby/2.1/debian-9/prod/Dockerfile
+++ b/bitnami/ruby/2.1/debian-9/prod/Dockerfile
@@ -1,5 +1,5 @@
 
-FROM bitnami/ruby:2.1.10-debian-9-r3 as development
+FROM bitnami/ruby:2.1.10-debian-9-r4 as development
 
 FROM bitnami/minideb:stretch
 LABEL maintainer "Bitnami <containers@bitnami.com>"
@@ -7,7 +7,7 @@ LABEL maintainer "Bitnami <containers@bitnami.com>"
 COPY --from=development /opt/bitnami/ruby /opt/bitnami/ruby
 
 ENV BITNAMI_APP_NAME="ruby" \
-    BITNAMI_IMAGE_VERSION="2.1.10-debian-9-r3" \
+    BITNAMI_IMAGE_VERSION="2.1.10-debian-9-r4" \
     PATH="/opt/bitnami/ruby/bin:$PATH"
 
 CMD ["irb"]
diff --git a/bitnami/ruby/README.md b/bitnami/ruby/README.md
index 56f5fedf4a44..ffec399793ac 100644
--- a/bitnami/ruby/README.md
+++ b/bitnami/ruby/README.md
@@ -42,7 +42,7 @@ $ docker-compose up -d
 * [`2.2-debian-9`, `2.2.10-debian-9-r4`, `2.2`, `2.2.10`, `2.2.10-r4` (2.2/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.2.10-debian-9-r4/2.2/Dockerfile)
 * [`2.2-debian-8`, `2.2.10-debian-8-r67` (2.2/debian-8/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.2.10-debian-8-r67/2.2/debian-8/Dockerfile)
 * [`2.1-ol-7`, `2.1.10-ol-7-r19` (2.1/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.1.10-ol-7-r19/2.1/ol-7/Dockerfile)
-* [`2.1-debian-9`, `2.1.10-debian-9-r3`, `2.1`, `2.1.10`, `2.1.10-r3` (2.1/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.1.10-debian-9-r3/2.1/Dockerfile)
+* [`2.1-debian-9`, `2.1.10-debian-9-r4`, `2.1`, `2.1.10`, `2.1.10-r4` (2.1/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.1.10-debian-9-r4/2.1/Dockerfile)
 * [`2.1-debian-8`, `2.1.10-debian-8-r75` (2.1/debian-8/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.1.10-debian-8-r75/2.1/debian-8/Dockerfile)
 
 Subscribe to project updates by watching the [bitnami/ruby GitHub repo](https://github.com/bitnami/bitnami-docker-ruby).