diff --git a/.gitea/workflows/publish.yml b/.gitea/workflows/publish.yml
index 82e4467..2ba70a5 100644
--- a/.gitea/workflows/publish.yml
+++ b/.gitea/workflows/publish.yml
@@ -3,7 +3,7 @@ name: Publish Package
 on:
   push:
     branches:
-      - "8.0"
+      - "7.0"
   workflow_dispatch:
 
 permissions:
@@ -19,7 +19,7 @@ jobs:
         with:
           token: ${{ secrets.GITEA_TOKEN }}
           github-server-url: "http://unpaismejor-gitea-app:3000"
-          ref: "8.0"
+          ref: ${{ github.ref_name }}
           fetch-depth: 0
 
       - name: Detect package branch
diff --git a/__init__.py b/__init__.py
index d85bb5e..a8f13b4 100644
--- a/__init__.py
+++ b/__init__.py
@@ -1,3 +1,15 @@
+from trytond.pool import Pool
+
 from . import invoice
 
 __all__ = ['invoice']
+
+
+def register():
+    Pool.register(
+        invoice.Invoice,
+        invoice.CreditInvoiceStart,
+        module='account_credit_note', type_='model')
+    Pool.register(
+        invoice.CreditInvoice,
+        module='account_credit_note', type_='wizard')
diff --git a/pyproject.toml b/pyproject.toml
index fa1f9cd..39ebaa9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ build-backend = 'hatchling.build'
 [project]
 name = 'unpaismejor_account_credit_note'
 dynamic = ['version', 'dependencies', 'optional-dependencies', 'authors', 'readme']
-requires-python = '>=3.10'
+requires-python = '>=3.8'
 maintainers = [
     {name = "Fundación Un País Mejor"},
     ]
diff --git a/tox.ini b/tox.ini
index 86fc339..9b5b6d1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = {py37,py38,py39,py310}-{sqlite,postgresql}
+envlist = {py38,py39,py310,py311}-{sqlite,postgresql}
 
 [testenv]
 extras = test
diff --git a/tryton.cfg b/tryton.cfg
index 9fa0651..3a67fab 100644
--- a/tryton.cfg
+++ b/tryton.cfg
@@ -1,5 +1,5 @@
 [tryton]
-version=8.0.1
+version=7.0.0
 depends:
     account_invoice
 xml: