diff --git a/.flake8 b/.flake8
index 24415d2..0c4d533 100644
--- a/.flake8
+++ b/.flake8
@@ -2,5 +2,7 @@
 # Black compatible values https://black.readthedocs.io/en/stable/compatible_configs.html#flake8
 max-line-length = 88
 extend-ignore =
-            E203, # whitespace before ':'
-            ANN101 # Missing type annotation for self in method
+    # E203: whitespace before ':'
+    E203,
+    # ANN101: Missing type annotation for self in method
+    ANN101
diff --git a/.github/workflows/code-style.yml b/.github/workflows/code-style.yml
index 2770d91..4fc33f9 100644
--- a/.github/workflows/code-style.yml
+++ b/.github/workflows/code-style.yml
@@ -9,6 +9,9 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
-      - uses: pre-commit/action@v2.0.2
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.9"
+          cache: pip
+      - uses: pre-commit/action@v3.0.0
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index e90992e..6d5e8aa 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,16 +16,22 @@ jobs:
     strategy:
       matrix:
         # Remove unsupported versions and add more versions. Use LTR version in the cov_tests job
-        docker_tags: [release-3_10, release-3_16, latest]
+        docker_tags: [release-3_28, latest]
       fail-fast: false
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: true
 
+      - uses: actions/setup-python@v4
+        with:
+          cache: pip
+      - run: pip install pip-tools
+      - run: pip-compile requirements-dev.in
+
       - name: Pull qgis
         run: docker pull qgis/qgis:${{ matrix.docker_tags }}
 
@@ -62,7 +68,7 @@ jobs:
       - name: Run tests
         shell: pwsh
         run: |
-          $env:PATH="C:\Program Files\QGIS 3.16\bin;$env:PATH"
+          $env:PATH=(Get-ChildItem -Path "C:\Program Files" -Directory QGIS*).FullName +"\bin;$env:PATH"
           $env:QGIS_PLUGIN_IN_CI=1
           python-qgis-ltr.bat -m pip install -qr requirements-dev.txt
           python-qgis-ltr.bat -m pytest -v
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 02822c7..1e0d30b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -2,25 +2,25 @@
 # See https://pre-commit.com/hooks.html for more hooks
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.0.1
+    rev: v4.5.0
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
       - id: check-yaml
       - id: check-added-large-files
   - repo: https://github.com/PyCQA/isort
-    rev: 5.9.3
+    rev: 5.12.0
     hooks:
       - id: isort
   - repo: https://github.com/psf/black
-    rev: 21.7b0
+    rev: 23.11.0
     hooks:
       - id: black
   - repo: https://github.com/PyCQA/flake8
-    rev: 3.9.2
+    rev: 6.1.0
     hooks:
       - id: flake8
         additional_dependencies:
-          - flake8-bugbear~=21.4.3
-          - pep8-naming~=0.12.1
-          - flake8-qgis>=0.1.4
+          - flake8-bugbear~=23.9.16
+          - pep8-naming~=0.13.3
+          - flake8-qgis>=1.0.0
diff --git a/.qgis-plugin-ci b/.qgis-plugin-ci
deleted file mode 100644
index bca683a..0000000
--- a/.qgis-plugin-ci
+++ /dev/null
@@ -1,5 +0,0 @@
-plugin_path: nlsgpkgloader
-github_organization_slug: GispoCoding
-project_slug: NLSgpkgloader
-transifex_coordinator: replace-me
-transifex_organization: replace-me
diff --git a/nlsgpkgloader/nls_geopackage_loader.py b/nlsgpkgloader/nls_geopackage_loader.py
index fa312fa..46abad1 100644
--- a/nlsgpkgloader/nls_geopackage_loader.py
+++ b/nlsgpkgloader/nls_geopackage_loader.py
@@ -89,7 +89,7 @@ def __init__(self):
 
         # Declare instance attributes
         self.actions = []
-        self.menu = self.tr(u"&NLS GeoPackage Downloader")
+        self.menu = self.tr("&NLS GeoPackage Downloader")
 
         # Check if plugin was started the first time in current QGIS session
         # Must be set in initGui() to survive plugin reloads
@@ -200,7 +200,7 @@ def initGui(self):  # noqa N802
 
         self.add_action(
             resources_path("icons", "icon.png"),
-            text=self.tr(u"NLS GeoPackage Downloader"),
+            text=self.tr("NLS GeoPackage Downloader"),
             callback=self.run,
             parent=self.iface.mainWindow(),
         )
@@ -220,7 +220,7 @@ def _migrate_settings():
     def unload(self):
         """Removes the plugin menu item and icon from QGIS GUI."""
         for action in self.actions:
-            self.iface.removePluginMenu(self.tr(u"&NLS GeoPackage Downloader"), action)
+            self.iface.removePluginMenu(self.tr("&NLS GeoPackage Downloader"), action)
             self.iface.removeToolBarIcon(action)
 
     def run(self):
@@ -249,8 +249,8 @@ def run(self):
         if not self.load_layers():
             QMessageBox.critical(
                 self.iface.mainWindow(),
-                self.tr(u"Failed to load data"),
-                self.tr(u"Check that necessary files exist in data folder"),
+                self.tr("Failed to load data"),
+                self.tr("Check that necessary files exist in data folder"),
             )
             return
 
@@ -292,8 +292,8 @@ def run(self):
             if self.fileName == "":
                 QMessageBox.critical(
                     self.iface.mainWindow(),
-                    self.tr(u"Invalid filename"),
-                    self.tr(u"Please enter a filename"),
+                    self.tr("Invalid filename"),
+                    self.tr("Please enter a filename"),
                 )
                 return
             if self.fileName.split(".")[-1].lower() != "gpkg":
@@ -391,8 +391,8 @@ def run(self):
                 self.progress_dialog.hide()
                 QMessageBox.critical(
                     self.iface.mainWindow(),
-                    self.tr(u"Invalid selection"),
-                    self.tr(u"Found nothing to download!"),
+                    self.tr("Invalid selection"),
+                    self.tr("Found nothing to download!"),
                 )
                 return
 
@@ -673,7 +673,7 @@ def get_intersecting_features(self, features, layer, selected_mun_names=None):
         if selected_mun_names:
             expression = ""
             for mun in selected_mun_names:
-                expression += u'"NAMEFIN" = \'' + mun + u"' OR "
+                expression += '"NAMEFIN" = \'' + mun + "' OR "
             expression = expression[:-4]
 
             iter = self.municipality_layer.getFeatures(expression)
@@ -694,7 +694,6 @@ def get_intersecting_features(self, features, layer, selected_mun_names=None):
                         self.utm25lr_features.append(layer_feature)
 
     def download_data(self, product_types):
-
         self.all_urls = []
         self.total_download_count = 0
         self.download_count = 0
@@ -858,9 +857,8 @@ def finish_processing(self):
                         )
                     )
         self.iface.messageBar().pushMessage(
-            self.tr(u"GeoPackage creation finished"),
-            self.tr(u"NLS data download finished. Data located under ")
-            + self.gpkg_path,
+            self.tr("GeoPackage creation finished"),
+            self.tr("NLS data download finished. Data located under ") + self.gpkg_path,
             level=3,
         )
         self.progress_dialog.hide()
@@ -887,8 +885,8 @@ def show_settings_dialog(self):
                 # cannot work without the key, so user needs to be notified
                 QMessageBox.critical(
                     self.iface.mainWindow(),
-                    self.tr(u"User-key is needed"),
-                    self.tr(u"Data cannot be downloaded without the NLS key"),
+                    self.tr("User-key is needed"),
+                    self.tr("Data cannot be downloaded without the NLS key"),
                 )
                 return False
             self.data_download_dir = (
@@ -903,8 +901,8 @@ def show_settings_dialog(self):
             # cannot work without the key, so user needs to be notified
             QMessageBox.critical(
                 self.iface.mainWindow(),
-                self.tr(u"User-key is needed"),
-                self.tr(u"Data cannot be downloaded without the NLS key"),
+                self.tr("User-key is needed"),
+                self.tr("Data cannot be downloaded without the NLS key"),
             )
             return False
 
diff --git a/pyproject.toml b/pyproject.toml
index a48650c..7270c30 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,3 +17,8 @@ testpaths = "tests"
 
 [tool.coverage.report]
 omit = ["nlsgpkgloader/qgis_plugin_tools/*"]
+
+[tool.qgis-plugin-ci]
+plugin_path = "nlsgpkgloader"
+github_organization_slug = "GispoCoding"
+project_slug = "NLSgpkgloader"
diff --git a/requirements-dev.in b/requirements-dev.in
new file mode 100644
index 0000000..465a984
--- /dev/null
+++ b/requirements-dev.in
@@ -0,0 +1,16 @@
+pip-tools
+
+# Testing
+pytest
+pytest-cov
+pytest-qgis
+
+# Linting and formatting
+pre-commit
+black
+isort
+flake8
+flake8-bugbear
+pep8-naming
+flake8-qgis
+PyQt5-stubs
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 5d5f218..a8557a2 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,13 +1,117 @@
-# Testing
-pytest~=6.2.3
-pytest-cov~=2.12.1
-pytest-qgis~=0.1.0
+#
+# This file is autogenerated by pip-compile with Python 3.9
+# by the following command:
+#
+#    pip-compile '.\requirements-dev.in'
+#
+astor==0.8.1
+    # via flake8-qgis
+attrs==23.1.0
+    # via flake8-bugbear
+black==23.11.0
+    # via -r .\requirements-dev.in
+build==1.0.3
+    # via pip-tools
+cfgv==3.4.0
+    # via pre-commit
+click==8.1.7
+    # via
+    #   black
+    #   pip-tools
+colorama==0.4.6
+    # via
+    #   build
+    #   click
+    #   pytest
+coverage[toml]==7.3.2
+    # via
+    #   coverage
+    #   pytest-cov
+distlib==0.3.7
+    # via virtualenv
+exceptiongroup==1.1.3
+    # via pytest
+filelock==3.13.1
+    # via virtualenv
+flake8==6.1.0
+    # via
+    #   -r .\requirements-dev.in
+    #   flake8-bugbear
+    #   flake8-qgis
+    #   pep8-naming
+flake8-bugbear==23.9.16
+    # via -r .\requirements-dev.in
+flake8-qgis==1.0.0
+    # via -r .\requirements-dev.in
+identify==2.5.31
+    # via pre-commit
+importlib-metadata==6.8.0
+    # via build
+iniconfig==2.0.0
+    # via pytest
+isort==5.12.0
+    # via -r .\requirements-dev.in
+mccabe==0.7.0
+    # via flake8
+mypy-extensions==1.0.0
+    # via black
+nodeenv==1.8.0
+    # via pre-commit
+packaging==23.2
+    # via
+    #   black
+    #   build
+    #   pytest
+pathspec==0.11.2
+    # via black
+pep8-naming==0.13.3
+    # via -r .\requirements-dev.in
+pip-tools==7.3.0
+    # via -r .\requirements-dev.in
+platformdirs==3.11.0
+    # via
+    #   black
+    #   virtualenv
+pluggy==1.3.0
+    # via pytest
+pre-commit==3.5.0
+    # via -r .\requirements-dev.in
+pycodestyle==2.11.1
+    # via flake8
+pyflakes==3.1.0
+    # via flake8
+pyproject-hooks==1.0.0
+    # via build
+pyqt5-stubs==5.15.6.0
+    # via -r .\requirements-dev.in
+pytest==7.4.3
+    # via
+    #   -r .\requirements-dev.in
+    #   pytest-cov
+    #   pytest-qgis
+pytest-cov==4.1.0
+    # via -r .\requirements-dev.in
+pytest-qgis==1.3.5
+    # via -r .\requirements-dev.in
+pyyaml==6.0.1
+    # via pre-commit
+tomli==2.0.1
+    # via
+    #   black
+    #   build
+    #   coverage
+    #   pip-tools
+    #   pyproject-hooks
+    #   pytest
+typing-extensions==4.8.0
+    # via black
+virtualenv==20.24.6
+    # via pre-commit
+wheel==0.41.3
+    # via pip-tools
+zipp==3.17.0
+    # via importlib-metadata
 
-# Linting and formatting
-pre-commit>=2.12.1
-black~=21.7b0
-isort~=5.9.3
-flake8~=3.9.2
-flake8-bugbear~=21.4.3
-pep8-naming~=0.12.1
-flake8-qgis>=0.1.4
+# The following packages are considered to be unsafe in a requirements file:
+# pip
+# setuptools