diff --git a/bitnami/ruby/2.5/debian-9/Dockerfile b/bitnami/ruby/2.5/debian-9/Dockerfile
index b48af069c076..ac9fb3b8c2a7 100644
--- a/bitnami/ruby/2.5/debian-9/Dockerfile
+++ b/bitnami/ruby/2.5/debian-9/Dockerfile
@@ -12,7 +12,7 @@ RUN sed -i 's/^PASS_MAX_DAYS.*/PASS_MAX_DAYS    90/' /etc/login.defs && \
     sed -i 's/sha512/sha512 minlen=8/' /etc/pam.d/common-password
 
 ENV BITNAMI_APP_NAME="ruby" \
-    BITNAMI_IMAGE_VERSION="2.5.7-debian-9-r27" \
+    BITNAMI_IMAGE_VERSION="2.5.7-debian-9-r28" \
     PATH="/opt/bitnami/ruby/bin:$PATH"
 
 EXPOSE 3000
diff --git a/bitnami/ruby/README.md b/bitnami/ruby/README.md
index 32a85a3d1d03..2ef3613ebba7 100644
--- a/bitnami/ruby/README.md
+++ b/bitnami/ruby/README.md
@@ -54,7 +54,7 @@ Learn more about the Bitnami tagging policy and the difference between rolling t
 * [`2.6-debian-9-prod`, `2.6.5-debian-9-r25-prod`, `2.6-prod`, `2.6.5-prod`, `2.6.5-r25-prod`, `latest-prod` (2.6-prod/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.6.5-debian-9-r25-prod/2.6-prod/debian-9/Dockerfile)
 * [`2.5-ol-7-prod`, `2.5.7-ol-7-r32-prod` (2.5-prod/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.5.7-ol-7-r32-prod/2.5-prod/ol-7/Dockerfile)
 * [`2.5-ol-7`, `2.5.7-ol-7-r32` (2.5/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.5.7-ol-7-r32/2.5/ol-7/Dockerfile)
-* [`2.5-debian-9`, `2.5.7-debian-9-r27`, `2.5`, `2.5.7`, `2.5.7-r27` (2.5/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.5.7-debian-9-r27/2.5/debian-9/Dockerfile)
+* [`2.5-debian-9`, `2.5.7-debian-9-r28`, `2.5`, `2.5.7`, `2.5.7-r28` (2.5/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.5.7-debian-9-r28/2.5/debian-9/Dockerfile)
 * [`2.5-debian-9-prod`, `2.5.7-debian-9-r26-prod`, `2.5-prod`, `2.5.7-prod`, `2.5.7-r26-prod` (2.5-prod/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.5.7-debian-9-r26-prod/2.5-prod/debian-9/Dockerfile)
 * [`2.4-ol-7`, `2.4.9-ol-7-r32` (2.4/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.4.9-ol-7-r32/2.4/ol-7/Dockerfile)
 * [`2.4-ol-7-prod`, `2.4.9-ol-7-r31-prod` (2.4-prod/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-ruby/blob/2.4.9-ol-7-r31-prod/2.4-prod/ol-7/Dockerfile)