diff --git a/bitnami/ruby/2.4-prod/ol-7/Dockerfile b/bitnami/ruby/2.4-prod/ol-7/Dockerfile
index b713882249f2..500ad8174873 100644
--- a/bitnami/ruby/2.4-prod/ol-7/Dockerfile
+++ b/bitnami/ruby/2.4-prod/ol-7/Dockerfile
@@ -1,8 +1,8 @@
-FROM bitnami/ruby:2.4.9-ol-7-r20 as development
+FROM bitnami/ruby:2.4.9-ol-7-r21 as development
 
 ######
 
-FROM bitnami/oraclelinux-runtimes:7-r475
+FROM bitnami/oraclelinux-runtimes:7-r476
 LABEL maintainer "Bitnami <containers@bitnami.com>"
 
 # Install required system packages and dependencies
@@ -11,7 +11,7 @@ RUN install_packages ca-certificates glibc keyutils-libs krb5-libs libcom_err li
 COPY --from=development /opt/bitnami/ruby /opt/bitnami/ruby
 
 ENV BITNAMI_APP_NAME="ruby" \
-    BITNAMI_IMAGE_VERSION="2.4.9-ol-7-r20-prod" \
+    BITNAMI_IMAGE_VERSION="2.4.9-ol-7-r21-prod" \
     PATH="/opt/bitnami/ruby/bin:$PATH"
 
 CMD [ "irb" ]
diff --git a/bitnami/ruby/README.md b/bitnami/ruby/README.md
index e5317f83dcc3..e4d4e4c2ed62 100644
--- a/bitnami/ruby/README.md
+++ b/bitnami/ruby/README.md
@@ -56,8 +56,8 @@ Learn more about the Bitnami tagging policy and the difference between rolling t
 * [`2.5-ol-7`, `2.5.7-ol-7-r22` (2.5/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.5.7-ol-7-r22/2.5/ol-7/Dockerfile)
 * [`2.5-debian-9-prod`, `2.5.7-debian-9-r17-prod`, `2.5-prod`, `2.5.7-prod`, `2.5.7-r17-prod` (2.5-prod/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.5.7-debian-9-r17-prod/2.5-prod/debian-9/Dockerfile)
 * [`2.5-debian-9`, `2.5.7-debian-9-r17`, `2.5`, `2.5.7`, `2.5.7-r17` (2.5/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.5.7-debian-9-r17/2.5/debian-9/Dockerfile)
+* [`2.4-ol-7-prod`, `2.4.9-ol-7-r21-prod` (2.4-prod/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.4.9-ol-7-r21-prod/2.4-prod/ol-7/Dockerfile)
 * [`2.4-ol-7`, `2.4.9-ol-7-r21` (2.4/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.4.9-ol-7-r21/2.4/ol-7/Dockerfile)
-* [`2.4-ol-7-prod`, `2.4.9-ol-7-r20-prod` (2.4-prod/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.4.9-ol-7-r20-prod/2.4-prod/ol-7/Dockerfile)
 * [`2.4-debian-9-prod`, `2.4.9-debian-9-r16-prod`, `2.4-prod`, `2.4.9-prod`, `2.4.9-r16-prod` (2.4-prod/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.4.9-debian-9-r16-prod/2.4-prod/debian-9/Dockerfile)
 * [`2.4-debian-9`, `2.4.9-debian-9-r16`, `2.4`, `2.4.9`, `2.4.9-r16` (2.4/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.4.9-debian-9-r16/2.4/debian-9/Dockerfile)