diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 8ef8bfd..a3f80b8 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -3,6 +3,7 @@
 # This file is part of Invenio.
 # Copyright (C) 2020 CERN.
 # Copyright (C) 2022 Graz University of Technology.
+# Copyright (C) 2024 KTH Royal Institute of Technology.
 #
 # Invenio is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
@@ -11,9 +12,11 @@ name: CI
 
 on:
   push:
-    branches: master
+    branches:
+      - master
   pull_request:
-    branches: master
+    branches:
+      - master
   schedule:
     # * is a special character in YAML so you have to quote this string
     - cron:  '0 3 * * 6'
@@ -25,58 +28,7 @@ on:
         default: 'Manual trigger'
 
 jobs:
-  Tests:
-    runs-on: ubuntu-20.04
-    timeout-minutes: 20
-    strategy:
-      matrix:
-          python-version: [3.8, 3.9]
-          requirements-level: [pypi]
-          db-service: [postgresql14,postgresql13,mysql8]
-          mq-service: [rabbitmq]
-          search-service: [opensearch2,elasticsearch7]
-          include:
-          - db-service: postgresql14
-            DB_EXTRAS: "postgresql"
-
-          - db-service: postgresql13
-            DB_EXTRAS: "postgresql"
-
-          - db-service: mysql8
-            DB_EXTRAS: "mysql"
-    env:
-      DB: ${{ matrix.db-service }}
-      MQ: ${{ matrix.mq-service }}
-      SEARCH: ${{ matrix.search-service }}
-      EXTRAS: tests,${{ matrix.search-service }}
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Generate dependencies
-        run: |
-          pip install wheel requirements-builder
-          requirements-builder -e "$EXTRAS" --level=${{ matrix.requirements-level }} setup.py > .${{ matrix.requirements-level }}-${{ matrix.python-version }}-requirements.txt
-
-      - name: Cache pip
-        uses: actions/cache@v2
-        with:
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('.${{ matrix.requirements-level }}-${{ matrix.python-version }}-requirements.txt') }}
-
-      - name: Install dependencies
-        run: |
-          pip install -r .${{ matrix.requirements-level }}-${{ matrix.python-version }}-requirements.txt
-          pip install ".[$EXTRAS]"
-          pip freeze
-          docker --version
-          docker compose --version
-
-      - name: Run tests
-        run: |
-          ./run-tests.sh
+  Python:
+      uses: inveniosoftware/workflows/.github/workflows/tests-python.yml@master
+      with:
+        extras: "tests"
diff --git a/invenio_oaiserver/admin.py b/invenio_oaiserver/admin.py
index 25b7378..a34cc1d 100644
--- a/invenio_oaiserver/admin.py
+++ b/invenio_oaiserver/admin.py
@@ -2,6 +2,7 @@
 #
 # This file is part of Invenio.
 # Copyright (C) 2015-2018 CERN.
+# Copyright (C) 2024 KTH Royal Institute of Technology.
 #
 # Invenio is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
@@ -9,15 +10,11 @@
 """Admin model views for OAI sets."""
 
 from flask_admin.contrib.sqla import ModelView
+from invenio_i18n import gettext as _
 
 from .models import OAISet
 
 
-def _(x):
-    """Identity."""
-    return x
-
-
 class OAISetModelView(ModelView):
     """OAISets model view."""
 
diff --git a/invenio_oaiserver/models.py b/invenio_oaiserver/models.py
index c370cc7..1b5dba9 100644
--- a/invenio_oaiserver/models.py
+++ b/invenio_oaiserver/models.py
@@ -3,6 +3,7 @@
 # This file is part of Invenio.
 # Copyright (C) 2015-2022 CERN.
 # Copyright (C) 2022 Graz University of Technology.
+# Copyright (C) 2024 KTH Royal Institute of Technology.
 #
 # Invenio is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
@@ -79,7 +80,7 @@ class OAISet(db.Model, Timestamp):
     def validate_spec(self, key, value):
         """Forbit updates of set identifier."""
         if self.spec and self.spec != value:
-            raise OAISetSpecUpdateError("Updating spec is not allowed.")
+            raise OAISetSpecUpdateError(_("Updating spec is not allowed."))
         return value
 
 
diff --git a/invenio_oaiserver/percolator.py b/invenio_oaiserver/percolator.py
index 86631c8..fa334b8 100644
--- a/invenio_oaiserver/percolator.py
+++ b/invenio_oaiserver/percolator.py
@@ -3,6 +3,7 @@
 # This file is part of Invenio.
 # Copyright (C) 2017-2024 CERN.
 # Copyright (C) 2022 Graz University of Technology.
+# Copyright (C) 2024 KTH Royal Institute of Technology.
 #
 # Invenio is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
@@ -12,6 +13,7 @@
 import json
 
 from flask import current_app
+from invenio_i18n import lazy_gettext as _
 from invenio_indexer.api import RecordIndexer
 from invenio_search import current_search, current_search_client
 from invenio_search.engine import search
@@ -128,7 +130,9 @@ def create_percolate_query(
         )
     else:
         raise Exception(
-            "Either documents or (document_search_ids and document_search_indices) must be specified."
+            _(
+                "Either documents or (document_search_ids and document_search_indices) must be specified."
+            )
         )
 
     if percolator_ids:
diff --git a/invenio_oaiserver/verbs.py b/invenio_oaiserver/verbs.py
index ebb3994..9119c3f 100644
--- a/invenio_oaiserver/verbs.py
+++ b/invenio_oaiserver/verbs.py
@@ -4,6 +4,7 @@
 # Copyright (C) 2015-2018 CERN.
 # Copyright (C) 2021-2022 Graz University of Technology.
 # Copyright (C) 2022 RERO.
+# Copyright (C) 2024 KTH Royal Institute of Technology.
 #
 # Invenio is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
@@ -11,6 +12,7 @@
 """OAI-PMH verbs."""
 
 from flask import current_app, request
+from invenio_i18n import gettext as _
 from invenio_rest.serializer import BaseSchema
 from marshmallow import ValidationError, fields, validates_schema
 from marshmallow.fields import DateTime as _DateTime
@@ -28,7 +30,7 @@ def validate_metadata_prefix(value, **kwargs):
     metadataFormats = current_app.config["OAISERVER_METADATA_FORMATS"]
     if value not in metadataFormats:
         raise ValidationError(
-            "metadataPrefix does not exist", field_names=["metadataPrefix"]
+            _("metadataPrefix does not exist"), field_names=["metadataPrefix"]
         )
 
 
@@ -88,12 +90,13 @@ def validate(self, data, **kwargs):
         if "verb" in data and data["verb"] != self.__class__.__name__:
             raise ValidationError(
                 # FIXME encode data
-                "This is not a valid OAI-PMH verb:{0}".format(data["verb"]),
+                _("This is not a valid OAI-PMH verb:{0}").format(data["verb"]),
                 field_names=["verb"],
             )
 
         if "from_" in data and "until" in data and data["from_"] > data["until"]:
-            raise ValidationError('Date "from" must be before "until".')
+
+            raise ValidationError(_('Date "from" must be before "until".'))
 
 
 class Verbs(object):
@@ -162,7 +165,7 @@ def check_extra_params_in_request(verb):
         ]
     )
     if extra:
-        raise ValidationError({"_schema": ["You have passed too many arguments."]})
+        raise ValidationError({"_schema": [_("You have passed too many arguments.")]})
 
 
 def make_request_validator(request):
diff --git a/setup.cfg b/setup.cfg
index 534bdc6..06c5f8b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -3,6 +3,7 @@
 # This file is part of Invenio.
 # Copyright (C) 2015-2018 CERN.
 # Copyright (C) 2022 Graz University of Technology.
+# Copyright (C) 2024 KTH Royal Institute of Technology.
 #
 # Invenio is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
@@ -73,6 +74,8 @@ invenio_pidstore.minters =
     oaiid = invenio_oaiserver.minters:oaiid_minter
 invenio_pidstore.fetchers =
     oaiid = invenio_oaiserver.fetchers:oaiid_fetcher
+invenio_i18n.translations =
+    invenio_oaiserver = invenio_oaiserver
 
 [build_sphinx]
 source-dir = docs/