diff --git a/bitnami/cainjector/1/debian-11/Dockerfile b/bitnami/cainjector/1/debian-11/Dockerfile
index 7291e624555c..3404e62c030f 100644
--- a/bitnami/cainjector/1/debian-11/Dockerfile
+++ b/bitnami/cainjector/1/debian-11/Dockerfile
@@ -4,7 +4,7 @@ ARG TARGETARCH
 
 LABEL org.opencontainers.image.authors="https://bitnami.com/contact" \
       org.opencontainers.image.description="Application packaged by Bitnami" \
-      org.opencontainers.image.ref.name="1.9.1-debian-11-r19" \
+      org.opencontainers.image.ref.name="1.9.1-debian-11-r20" \
       org.opencontainers.image.source="https://github.com/bitnami/containers/tree/main/bitnami/cainjector" \
       org.opencontainers.image.title="cainjector" \
       org.opencontainers.image.vendor="VMware, Inc." \
@@ -28,7 +28,7 @@ RUN mkdir -p /tmp/bitnami/pkg/cache/ && cd /tmp/bitnami/pkg/cache/ && \
     tar -zxf cainjector-1.9.1-2-linux-${OS_ARCH}-debian-11.tar.gz -C /opt/bitnami --strip-components=2 --no-same-owner --wildcards '*/files' && \
     rm -rf cainjector-1.9.1-2-linux-${OS_ARCH}-debian-11.tar.gz cainjector-1.9.1-2-linux-${OS_ARCH}-debian-11.tar.gz.sha256
 RUN apt-get update && apt-get upgrade -y && \
-    rm -r /var/lib/apt/lists /var/cache/apt/archives
+    apt-get clean && rm -rf /var/lib/apt/lists /var/cache/apt/archives
 RUN chmod g+rwX /opt/bitnami
 
 ENV APP_VERSION="1.9.1" \
diff --git a/bitnami/cainjector/1/debian-11/prebuildfs/usr/sbin/install_packages b/bitnami/cainjector/1/debian-11/prebuildfs/usr/sbin/install_packages
index c9577647443b..2c915f265c9d 100755
--- a/bitnami/cainjector/1/debian-11/prebuildfs/usr/sbin/install_packages
+++ b/bitnami/cainjector/1/debian-11/prebuildfs/usr/sbin/install_packages
@@ -21,4 +21,4 @@ until [ $n -gt $max ]; do
     echo "apt failed, retrying"
     n=$(($n + 1))
 done
-rm -r /var/lib/apt/lists /var/cache/apt/archives
+apt-get clean && rm -rf /var/lib/apt/lists /var/cache/apt/archives
diff --git a/bitnami/cainjector/README.md b/bitnami/cainjector/README.md
index 9fd89342d0ba..57ef7e60ef0a 100644
--- a/bitnami/cainjector/README.md
+++ b/bitnami/cainjector/README.md
@@ -46,7 +46,7 @@ Non-root container images add an extra layer of security and are generally recom
 Learn more about the Bitnami tagging policy and the difference between rolling tags and immutable tags [in our documentation page](https://docs.bitnami.com/tutorials/understand-rolling-tags-containers/).
 
 
-* [`1`, `1-debian-11`, `1.9.1`, `1.9.1-debian-11-r19`, `latest` (1/debian-11/Dockerfile)](https://github.com/bitnami/containers/blob/main/bitnami/cainjector/1/debian-11/Dockerfile)
+* [`1`, `1-debian-11`, `1.9.1`, `1.9.1-debian-11-r20`, `latest` (1/debian-11/Dockerfile)](https://github.com/bitnami/containers/blob/main/bitnami/cainjector/1/debian-11/Dockerfile)
 
 Subscribe to project updates by watching the [bitnami/containers GitHub repo](https://github.com/bitnami/containers).