diff --git a/pica-db-backup/CHANGELOG.md b/pica-db-backup/CHANGELOG.md
index e099d66a83e50c7ec744c9a9d24e90a57b9d6dc8..e28d6c47dc0b8e3f8ad384cf5357f3b7b2dfd62d 100644
--- a/pica-db-backup/CHANGELOG.md
+++ b/pica-db-backup/CHANGELOG.md
@@ -1,5 +1,5 @@
 ## Version 1.3
 
-* Switch from Python image to Bullseye image
+* Switch from Python image to Sid image (because Mongo does not exists in Bullseye and PG12 only in Bullseye and Sid...)
 * Update for PG12+
 * Default cron hour at 03:00AM
diff --git a/pica-db-backup/Dockerfile b/pica-db-backup/Dockerfile
index 280113627d578073169115aff58cd493b1f44406..d3297da620dbaf0f6b8883fa75cea7234a2458f7 100644
--- a/pica-db-backup/Dockerfile
+++ b/pica-db-backup/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:bullseye-slim
+FROM debian:sid-slim
 
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \