diff --git a/.copier-answers.yml b/.copier-answers.yml
index fa424fd..f2c79ae 100644
--- a/.copier-answers.yml
+++ b/.copier-answers.yml
@@ -13,7 +13,7 @@ github_enable_makepot: false
 github_enforce_dev_status_compatibility: true
 include_wkhtmltopdf: true
 odoo_test_flavor: Odoo
-odoo_version: 17.0
+odoo_version: 16.0
 org_name: IFE Gesellschaft für Forschung und Entwicklung
 org_slug: ifegmbh
 rebel_module_groups: []
diff --git a/.eslintrc.yml b/.eslintrc.yml
index 0b38203..fed88d7 100644
--- a/.eslintrc.yml
+++ b/.eslintrc.yml
@@ -4,7 +4,7 @@ env:
 
 # See https://github.com/OCA/odoo-community.org/issues/37#issuecomment-470686449
 parserOptions:
-  ecmaVersion: 2022
+  ecmaVersion: 2019
 
 overrides:
   - files:
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index f52dfa3..5d38a2f 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -3,10 +3,10 @@ name: pre-commit
 on:
   pull_request:
     branches:
-      - "17.0*"
+      - "16.0*"
   push:
     branches:
-      - "*-17.0-*"
+      - "*-16.0-*"
 
 jobs:
   pre-commit:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 37d94cf..f4ab3c3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -3,10 +3,10 @@ name: tests
 on:
   pull_request:
     branches:
-      - "17.0*"
+      - "16.0*"
   push:
     branches:
-      - "*-17.0-*"
+      - "*-16.0-*"
 
 jobs:
   unreleased-deps:
@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - container: ghcr.io/oca/oca-ci/py3.10-odoo17.0:latest
+          - container: ghcr.io/oca/oca-ci/py3.10-odoo16.0:latest
             name: test with Odoo
             makepot: "false"
     services:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index fc5ef9b..aa4561e 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -54,7 +54,7 @@ repos:
       - id: oca-gen-addon-readme
         args:
           - --addon-dir=ass
-          - --branch=17.0
+          - --branch=16.0
           - --org-name=ifegmbh
           - --repo-name=ass
           - --if-source-changed
@@ -114,7 +114,7 @@ repos:
         args: [--fix, --exit-non-zero-on-fix]
       - id: ruff-format
   - repo: https://github.com/OCA/pylint-odoo
-    rev: v9.0.4
+    rev: v8.0.19
     hooks:
       - id: pylint_odoo
         name: pylint with optional checks
diff --git a/.pylintrc b/.pylintrc
index 6292dce..b076260 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -10,7 +10,7 @@ manifest-required-authors=IFE Gesellschaft für Forschung und Entwicklung
 manifest-required-keys=license
 manifest-deprecated-keys=description,active
 license-allowed=AGPL-3,GPL-2,GPL-2 or any later version,GPL-3,GPL-3 or any later version,LGPL-3,OPL-1
-valid-odoo-versions=17.0
+valid-odoo-versions=16.0
 
 [MESSAGES CONTROL]
 disable=all
diff --git a/.pylintrc-mandatory b/.pylintrc-mandatory
index 48a7e49..83ba26c 100644
--- a/.pylintrc-mandatory
+++ b/.pylintrc-mandatory
@@ -9,7 +9,7 @@ manifest-required-authors=IFE Gesellschaft für Forschung und Entwicklung
 manifest-required-keys=license
 manifest-deprecated-keys=description,active
 license-allowed=AGPL-3,GPL-2,GPL-2 or any later version,GPL-3,GPL-3 or any later version,LGPL-3,OPL-1
-valid-odoo-versions=17.0
+valid-odoo-versions=16.0
 
 [MESSAGES CONTROL]
 disable=all
diff --git a/README.md b/README.md
index ccb2fec..b43ea8a 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 
 <!-- /!\ Non OCA Context : Set here the badge of your runbot / runboat instance. -->
-[![Pre-commit Status](https://github.com/ifegmbh/ass/actions/workflows/pre-commit.yml/badge.svg?branch=17.0)](https://github.com/ifegmbh/ass/actions/workflows/pre-commit.yml?query=branch%3A17.0)
-[![Build Status](https://github.com/ifegmbh/ass/actions/workflows/test.yml/badge.svg?branch=17.0)](https://github.com/ifegmbh/ass/actions/workflows/test.yml?query=branch%3A17.0)
-[![codecov](https://codecov.io/gh/ifegmbh/ass/branch/17.0/graph/badge.svg)](https://codecov.io/gh/ifegmbh/ass)
+[![Pre-commit Status](https://github.com/ifegmbh/ass/actions/workflows/pre-commit.yml/badge.svg?branch=16.0)](https://github.com/ifegmbh/ass/actions/workflows/pre-commit.yml?query=branch%3A16.0)
+[![Build Status](https://github.com/ifegmbh/ass/actions/workflows/test.yml/badge.svg?branch=16.0)](https://github.com/ifegmbh/ass/actions/workflows/test.yml?query=branch%3A16.0)
+[![codecov](https://codecov.io/gh/ifegmbh/ass/branch/16.0/graph/badge.svg)](https://codecov.io/gh/ifegmbh/ass)
 <!-- /!\ Non OCA Context : Set here the badge of your translation instance. -->
 
 <!-- /!\ do not modify above this line -->