diff --git a/config/compose.yml b/config/compose.yml
index 38591ce..92a494b 100644
--- a/config/compose.yml
+++ b/config/compose.yml
@@ -102,6 +102,20 @@ ou19:
   options:
     workers: 0
 
+ou20:
+  charm: odoo-tecnativa
+  docker-compose:
+    image: docker.0k.io/mirror/odoo:rc_20.0-ELABORE-LIGHT
+    ## Important to keep as a list: otherwise it'll overwrite charm's arguments.
+    command:
+      - "--log-level=debug"
+      - "--limit-time-cpu=1000000"
+      - "--limit-time-real=1000000"
+    volumes:
+       - /home/stephan/dev/Odoo/0k-odoo-upgrade/versions/20.0/addons/:/opt/odoo/auto/mig:rw
+  options:
+    workers: 0
+
 postgres:
   docker-compose:
     image: docker.0k.io/postgres:17.2.0-myc
diff --git a/versions/20.0/known_changes.yaml b/versions/20.0/known_changes.yaml
new file mode 100644
index 0000000..89758af
--- /dev/null
+++ b/versions/20.0/known_changes.yaml
@@ -0,0 +1,8 @@
+# Modules that became obsolete in version 20.0
+obsolete: []
+
+# Modules merged into Odoo Core in version 20.0
+merged_in_core: []
+
+# Modules renamed in version 20.0
+renamed: []
diff --git a/versions/20.0/post_upgrade.sh b/versions/20.0/post_upgrade.sh
new file mode 100755
index 0000000..1ab7e98
--- /dev/null
+++ b/versions/20.0/post_upgrade.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+set -euo pipefail
+
+echo "Post migration to 20.0..."
+
+
+echo "Post migration to 20.0 completed!"
diff --git a/versions/20.0/pre_upgrade.sh b/versions/20.0/pre_upgrade.sh
new file mode 100755
index 0000000..8f46401
--- /dev/null
+++ b/versions/20.0/pre_upgrade.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+set -euo pipefail
+
+echo "Prepare migration to 20.0..."
+
+# Copy database
+copy_database ou19 ou20 ou20 || exit 1
+
+
+# Execute SQL pre-migration commands
+PRE_MIGRATE_SQL=$(cat <<'EOF'
+EOF
+)
+echo "SQL command = $PRE_MIGRATE_SQL"
+query_postgres_container "$PRE_MIGRATE_SQL" ou20 || exit 1
+
+# Copy filestores
+copy_filestore ou19 ou19 ou20 ou20 || exit 1
+
+echo "Ready for migration to 20.0!"
diff --git a/versions/20.0/upgrade.sh b/versions/20.0/upgrade.sh
new file mode 100755
index 0000000..9236de8
--- /dev/null
+++ b/versions/20.0/upgrade.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+set -euo pipefail
+
+# --upgrade-path lists BOTH our custom migration scripts and OpenUpgrade's
+# native ones. Passing --upgrade-path overrides config['upgrade_path'], and
+# openupgrade_framework only sets that default when it is empty; so we must
+# include the native openupgrade_scripts/scripts path explicitly, otherwise the
+# native migration scripts would no longer run. Odoo appends every listed path
+# to odoo.upgrade.__path__ and concatenates (does not override) the scripts
+# found per module/version, so our script runs IN ADDITION to the native ones.
+run_compose run -p 8020:8069 ou20 --config=/opt/odoo/auto/odoo.conf --stop-after-init -u all --workers 0 --log-level=debug --max-cron-threads=0 --limit-time-real=10000 --database=ou20 --load=base,web,openupgrade_framework --addons-path=/opt/odoo/auto/mig,/opt/odoo/auto/addons --upgrade-path=/opt/odoo/auto/upgrade,/opt/odoo/auto/addons/openupgrade_scripts/scripts