diff --git a/Makefile b/Makefile
index 39a7d1dea..e0a34a1e6 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
 
 # Pass WORKERS=auto for parallel build
 ifndef WORKERS
-  WORKERS = 1
+  WORKERS = auto
 endif
 
 SPHINX_BUILD   = sphinx-build
@@ -67,7 +67,7 @@ extensions/odoo_theme/static/style.css: extensions/odoo_theme/static/style.scss
 
 #=== Development and debugging rules ===#
 
-fast: SPHINXOPTS += -A collapse_menu=True -j auto
+fast: SPHINXOPTS += -A collapse_menu=True
 fast: html
 
 static: extensions/odoo_theme/static/style.css
diff --git a/content/applications/finance/accounting/fiscal_localizations/localizations/france.rst b/content/applications/finance/accounting/fiscal_localizations/localizations/france.rst
index e4a224723..d098c498d 100644
--- a/content/applications/finance/accounting/fiscal_localizations/localizations/france.rst
+++ b/content/applications/finance/accounting/fiscal_localizations/localizations/france.rst
@@ -59,11 +59,9 @@ In case of non-conformity, your company risks a fine of €7,500.
 
 To get the certification just follow the following steps:
 
-* Install the anti-fraud module fitting your Odoo environment from the
-  *Apps* menu:
-
-  * if you use Odoo Point of Sale: *l10n_fr_pos_cert*: France - VAT Anti-Fraud Certification for Point of Sale (CGI 286 I-3 bis)
-  * in any other case: *l10n_fr_certification*: France - VAT Anti-Fraud Certification (CGI 286 I-3 bis)
+* If you use **Odoo Point of Sale**, install the **France - VAT Anti-Fraud Certification for Point
+  of Sale (CGI 286 I-3 bis)** module by going to :menuselection:`Apps`, removing the *Apps* filter,
+  then searching for *l10n_fr_pos_cert*, and installing the module.
 
 * Make sure a country is set on your company, otherwise your entries won’t be
   encrypted for the inalterability check. To edit your company’s data,
diff --git a/content/applications/finance/accounting/receivables/customer_invoices/overview.rst b/content/applications/finance/accounting/receivables/customer_invoices/overview.rst
index f080107ed..499aca350 100644
--- a/content/applications/finance/accounting/receivables/customer_invoices/overview.rst
+++ b/content/applications/finance/accounting/receivables/customer_invoices/overview.rst
@@ -135,3 +135,15 @@ Some specific modules are also able to generate draft invoices:
 -  **membership**: invoice your members every year
 
 -  **repairs**: invoice your after-sale services
+
+Resequencing of the invoices
+----------------------------
+
+It remains possible to resequence the invoices but with some restrictions:
+
+#. The feature does not work when entries are previous to a lock date.
+#. The feature does not work if the sequence is inconsistent with the month of the entry.
+#. It does not work if the sequence leads to a duplicate.
+#. The order of the invoice remains unchanged.
+#. It is useful for people who use a numbering from another software and who want to continue the 
+   current year without starting over from the beginning.
diff --git a/extensions/autodoc_placeholder/__init__.py b/extensions/autodoc_placeholder/__init__.py
index 1f4e088b2..470f53830 100644
--- a/extensions/autodoc_placeholder/__init__.py
+++ b/extensions/autodoc_placeholder/__init__.py
@@ -21,6 +21,6 @@ def setup(app):
     directives.register_directive('autoattribute', PlaceHolder)
 
     return {
-        'parallel_read_safe': False,
+        'parallel_read_safe': True,
         'parallel_write_safe': True
     }
diff --git a/extensions/embedded_video/__init__.py b/extensions/embedded_video/__init__.py
index 9119e01c9..f200deeed 100644
--- a/extensions/embedded_video/__init__.py
+++ b/extensions/embedded_video/__init__.py
@@ -66,6 +66,6 @@ def setup(app):
     directives.register_directive('vimeo', Vimeo)
 
     return {
-        'parallel_read_safe': False,
+        'parallel_read_safe': True,
         'parallel_write_safe': True
     }
diff --git a/extensions/exercise_admonition/__init__.py b/extensions/exercise_admonition/__init__.py
index fd0b0b6a5..82be4d755 100644
--- a/extensions/exercise_admonition/__init__.py
+++ b/extensions/exercise_admonition/__init__.py
@@ -21,7 +21,7 @@ def setup(app):
     ))
 
     return {
-        'parallel_read_safe': False,
+        'parallel_read_safe': True,
         'parallel_write_safe': True
     }
 
diff --git a/extensions/github_link/__init__.py b/extensions/github_link/__init__.py
index 6bde1c906..5d1752c5e 100644
--- a/extensions/github_link/__init__.py
+++ b/extensions/github_link/__init__.py
@@ -75,7 +75,7 @@ def setup(app):
     app.config.linkcode_resolve = linkcode_resolve
 
     return {
-        'parallel_read_safe': False,
+        'parallel_read_safe': True,
         'parallel_write_safe': True
     }
 
diff --git a/extensions/html_domain/__init__.py b/extensions/html_domain/__init__.py
index f3e20b465..2b2997bde 100644
--- a/extensions/html_domain/__init__.py
+++ b/extensions/html_domain/__init__.py
@@ -40,7 +40,7 @@ def setup(app):
         addnode(app, node, name)
 
     return {
-        'parallel_read_safe': False,
+        'parallel_read_safe': True,
         'parallel_write_safe': True
     }
 
@@ -183,3 +183,11 @@ class HtmlDomain(Domain):
         'var': makerole(var),
         'samp': makerole(samp),
     }
+
+    def merge_domaindata(self, docnames, otherdata) -> None:
+        """Merge in data regarding *docnames* from a different domaindata
+        inventory (coming from a subprocess in parallel builds).
+        """
+        # This extension doesn't store any data on the env
+        # and therefore doesn't need to support this method.
+        pass
diff --git a/extensions/odoo_theme/__init__.py b/extensions/odoo_theme/__init__.py
index 041f9a14e..4e61aaefb 100644
--- a/extensions/odoo_theme/__init__.py
+++ b/extensions/odoo_theme/__init__.py
@@ -16,7 +16,7 @@ def setup(app):
     app.add_js_file('js/page_toc.js')
 
     return {
-        'parallel_read_safe': False,
+        'parallel_read_safe': True,
         'parallel_write_safe': True
     }
 
diff --git a/extensions/redirects/__init__.py b/extensions/redirects/__init__.py
index f66c6b6fa..054baf733 100644
--- a/extensions/redirects/__init__.py
+++ b/extensions/redirects/__init__.py
@@ -64,6 +64,6 @@ def setup(app):
     app.connect('builder-inited', generate_redirects)
 
     return {
-        'parallel_read_safe': False,
+        'parallel_read_safe': True,
         'parallel_write_safe': True
     }
diff --git a/extensions/switcher/__init__.py b/extensions/switcher/__init__.py
index 87c36e74b..d71316786 100644
--- a/extensions/switcher/__init__.py
+++ b/extensions/switcher/__init__.py
@@ -13,7 +13,7 @@ def setup(app):
     app.connect('env-updated', add_statics)
 
     return {
-        'parallel_read_safe': False,
+        'parallel_read_safe': True,
         'parallel_write_safe': True
     }