diff --git a/ruff.toml b/ruff.toml
index 5491cfc..6baf6d9 100644
--- a/ruff.toml
+++ b/ruff.toml
@@ -46,7 +46,6 @@ lint.extend-ignore = [
     #
     "E501", # line too long
     "E741", # Ambiguous variable name
-    #    "F841", # Local variable `...` is assigned to but never used
     "FURB113", # Use `x.extend(...)` instead of repeatedly calling `x.append()`
     #
     "N801", # Class name should use CapWords convention
diff --git a/src/abilian/sbe/apps/documents/models.py b/src/abilian/sbe/apps/documents/models.py
index 42937f9..ee2c646 100644
--- a/src/abilian/sbe/apps/documents/models.py
+++ b/src/abilian/sbe/apps/documents/models.py
@@ -766,7 +766,7 @@ def _trigger_conversion_tasks(session: Session) -> None:
 
     document_queue = _get_documents_queue()
     while document_queue:
-        doc, task_id = document_queue.pop()
+        doc, _task_id = document_queue.pop()
         if doc.id and isinstance(doc.id, int):
             logger.debug(
                 "_trigger_conversion_tasks() doc.id={doc_id}",
diff --git a/src/abilian/sbe/apps/documents/tasks.py b/src/abilian/sbe/apps/documents/tasks.py
index d71a699..fce2cb8 100644
--- a/src/abilian/sbe/apps/documents/tasks.py
+++ b/src/abilian/sbe/apps/documents/tasks.py
@@ -68,7 +68,7 @@ def process_document(document_id: int) -> None:
         document_id=document_id,
     )
 
-    with get_document(document_id) as (session, document):
+    with get_document(document_id) as (_session, document):
         if document is None:
             return
 
@@ -98,7 +98,7 @@ def _run_antivirus(document: Document) -> bool | None:
 @dramatiq.actor
 def antivirus_scan(document_id):
     """Return antivirus.scan() result."""
-    with get_document(document_id) as (session, document):
+    with get_document(document_id) as (_session, document):
         if document is None:
             return None
         return _run_antivirus(document)
@@ -108,7 +108,7 @@ def antivirus_scan(document_id):
 def preview_document(document_id: int) -> None:
     """Compute the document preview images with its default preview size."""
 
-    with get_document(document_id) as (session, document):
+    with get_document(document_id) as (_session, document):
         logger.debug(
             "preview_document() document_id={document_id} document={document}",
             document_id=document_id,
@@ -150,7 +150,7 @@ def convert_document_content(document_id: int) -> None:
         document_id=document_id,
     )
 
-    with get_document(document_id) as (session, doc):
+    with get_document(document_id) as (_session, doc):
         if doc is None:
             # deleted after task queued, but before task run
             return
diff --git a/src/abilian/sbe/apps/documents/webdav/views.py b/src/abilian/sbe/apps/documents/webdav/views.py
index 7ffae6d..dcc5ff4 100644
--- a/src/abilian/sbe/apps/documents/webdav/views.py
+++ b/src/abilian/sbe/apps/documents/webdav/views.py
@@ -145,7 +145,7 @@ def mkcol(path):
     if parent_folder is None:
         return "Parent collection doesn't exist.", HTTP_CONFLICT, {}
 
-    new_folder = parent_folder.create_subfolder(name=name)
+    parent_folder.create_subfolder(name=name)
     db.session.commit()
     return "", HTTP_CREATED, {}
 
@@ -231,7 +231,7 @@ def propfind(path):
     print(request.data)
 
     try:
-        propfind = Propfind(request.data)
+        Propfind(request.data)
     except XMLSyntaxError:
         return "Malformed XML document.", HTTP_BAD_REQUEST, {}
 
diff --git a/src/abilian/sbe/apps/forum/tasks.py b/src/abilian/sbe/apps/forum/tasks.py
index f7ef9b9..81c26c9 100644
--- a/src/abilian/sbe/apps/forum/tasks.py
+++ b/src/abilian/sbe/apps/forum/tasks.py
@@ -183,7 +183,7 @@ def extract_email_destination(address: str) -> tuple[str, ...]:
         address = m.group(1)
     local_part = address.rsplit("@", 1)[0]
     name, ident = local_part.rsplit("+", 1)
-    uid, digest = ident.rsplit("-", 1)
+    uid, _digest = ident.rsplit("-", 1)
     signed_local_part = build_local_part(name, uid)
 
     if local_part != signed_local_part:
diff --git a/src/abilian/sbe/apps/social/views/invites.py b/src/abilian/sbe/apps/social/views/invites.py
index 39042cc..ac00e18 100644
--- a/src/abilian/sbe/apps/social/views/invites.py
+++ b/src/abilian/sbe/apps/social/views/invites.py
@@ -42,12 +42,12 @@ def invite_post():
     emails = [email.strip() for email in emails]
 
     # FIXME: what do we do with this ?
-    message = request.form.get("message", "")
+    _message = request.form.get("message", "")
 
     with mail.connect() as conn:
         for email in emails:
             # FIXME: what do we do with this ?
-            invite = Invite(sender=current_user, email=email)
+            _invite = Invite(sender=current_user, email=email)
 
             # subject = _(u"%s would like to invite you to the %s community")
             # % (current_user.name, "Yaka")
diff --git a/src/abilian/sbe/apps/social/views/users.py b/src/abilian/sbe/apps/social/views/users.py
index 16b3919..0f5d685 100644
--- a/src/abilian/sbe/apps/social/views/users.py
+++ b/src/abilian/sbe/apps/social/views/users.py
@@ -129,8 +129,8 @@ def users_dt_json():
         cell1 = f'<div class="info"><a href="{user_url}">{name}</a></div>'
         cell2 = age(user.created_at)
         cell3 = age(user.last_active)
+        _cell4 = ""  # TODO: follow / unfollow?
 
-        cell4 = ""  # TODO: follow / unfollow?
         data.append([cell0, cell1, cell2, cell3])
 
     result = {
diff --git a/src/abilian/services/auth/views.py b/src/abilian/services/auth/views.py
index 4b58759..eb19624 100644
--- a/src/abilian/services/auth/views.py
+++ b/src/abilian/services/auth/views.py
@@ -207,7 +207,7 @@ def forgotten_pw(new_user: bool = False) -> str | Response | tuple[str, int]:
 
 @route("/reset_password/<token>")
 def reset_password(token: str) -> str | Response:
-    expired, invalid, user = reset_password_token_status(token)
+    expired, invalid, _user = reset_password_token_status(token)
     if invalid:
         flash(_("Invalid reset password token."), "error")
     elif expired:
@@ -330,7 +330,7 @@ def get_token_status(
     try:
         data = serializer.loads(token, max_age=max_age)
     except SignatureExpired:
-        d, data = serializer.loads_unsafe(token)
+        _d, data = serializer.loads_unsafe(token)
         expired = True
     except BadSignature:
         invalid = True
@@ -400,7 +400,7 @@ def check_for_redirect(target: str) -> str:
 
     # exceptions may happen if route is not found for example
     with contextlib.suppress(Exception):
-        endpoint, ignored = ctx.url_adapter.match(url.path, "GET")
+        endpoint, _ignored = ctx.url_adapter.match(url.path, "GET")
         if "." in endpoint and endpoint.rsplit(".", 1)[0] == "login":
             # don't redirect to any login view after successful login
             return ""
diff --git a/src/abilian/services/conversion/handlers.py b/src/abilian/services/conversion/handlers.py
index 11e6ad1..b510c42 100644
--- a/src/abilian/services/conversion/handlers.py
+++ b/src/abilian/services/conversion/handlers.py
@@ -324,7 +324,7 @@ def unoconv_version(self):
             cmd = [self.unoconv, "--version"]
 
         process = subprocess.Popen(cmd, stdout=subprocess.PIPE)
-        out, err = process.communicate()
+        out, _err = process.communicate()
         return out
 
     def convert(self, blob, **kw):
diff --git a/src/abilian/web/filters.py b/src/abilian/web/filters.py
index c86424d..8ff304e 100644
--- a/src/abilian/web/filters.py
+++ b/src/abilian/web/filters.py
@@ -147,8 +147,8 @@ def age(
     delta = dt - now
 
     if date_threshold is not None:
-        dy, dw, dd = dt_cal = dt.isocalendar()
-        ny, nw, nd = now_cal = now.isocalendar()
+        dy, _dw, _dd = dt_cal = dt.isocalendar()
+        ny, _nw, _nd = now_cal = now.isocalendar()
 
         if dt_cal != now_cal:
             # not same day
diff --git a/src/abilian/web/forms/fields.py b/src/abilian/web/forms/fields.py
index 7f45fb1..b9e75b1 100644
--- a/src/abilian/web/forms/fields.py
+++ b/src/abilian/web/forms/fields.py
@@ -552,7 +552,7 @@ def _get_pk_from_identity(obj):
         SQLAlchemy >= 1.2."""
         from sqlalchemy.orm.util import identity_key
 
-        cls, key = identity_key(instance=obj)[0:2]
+        _cls, key = identity_key(instance=obj)[0:2]
         return ":".join(str(x) for x in key)
 
     def _get_data(self):