diff --git a/CHANGELOG b/CHANGELOG
index 114dd69..b885012 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -18,8 +18,8 @@
 - blackbar-base-apps: image based on ghcr.io/bnosac/blackbar-base + shiny and commonly used shiny extensions (rmarkdown/shinydashboard/slib/fontawesome/knitr/reticulate)
 - blackbar-inception-minio: Inception (28.5) and Minio (RELEASE.2024-11-07T00-52-20Z)
 - blackbar-inception-minio-mariadb: Inception (28.5) and Minio (RELEASE.2024-11-07T00-52-20Z) and MariaDB (10.7)
-- blackbar-shinyproxy: ShinyProxy 3.0.2 and openjdk 11
-- blackbar-rstudio: RStudio, R 4.2.1, Python 3.10, Python packages relevant for blackbar, Java 21 from eclipse-temurin 
+- blackbar-shinyproxy: ShinyProxy 3.0.2 and openjdk 11 based on Debian Buster
+- blackbar-rstudio: RStudio, R 4.2.1, Python 3.10, Python packages relevant for blackbar, Java 21 from eclipse-temurin, based on Ubuntu 20.04
 
 
 
diff --git a/README.md b/README.md
index 7f733c1..f3a3cea 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ docker pull ghcr.io/bnosac/blackbar-inception-minio-mariadb:latest
 
 - **blackbar-shinyproxy**:  
 
-   - Docker image containing ShinyProxy 3.0.2 and openjdk 11
+   - Docker image containing ShinyProxy 3.0.2 and openjdk 11 based on Debian Buster
 
 ```
 docker pull ghcr.io/bnosac/blackbar-shinyproxy:latest
@@ -43,7 +43,7 @@ docker pull ghcr.io/bnosac/blackbar-shinyproxy:latest
 
 - **blackbar-rstudio**:  
 
-   - Docker image containing RStudio, R 4.2.1, Python 3.10, Python packages relevant for blackbar, Java 21
+   - Docker image containing RStudio, R 4.2.1, Python 3.10, Python packages relevant for blackbar, Java 21, based on Ubuntu 20.04
 
 ```
 docker pull ghcr.io/bnosac/blackbar-rstudio:latest