diff --git a/notebooks/wp4/trend_cordex_cmip6.ipynb b/notebooks/wp4/trend_cordex_cmip6.ipynb
index f25dc6f..68b7c84 100644
--- a/notebooks/wp4/trend_cordex_cmip6.ipynb
+++ b/notebooks/wp4/trend_cordex_cmip6.ipynb
@@ -390,11 +390,9 @@
     "    ds_trend[f\"{da.name}_climatology\"] = clima\n",
     "    if grid_out is not None:\n",
     "        ds_trend = ds_trend.cf.add_bounds(\n",
-    "            (\n",
-    "                coord\n",
-    "                for coord in (\"longitude\", \"latitude\")\n",
-    "                if coord not in ds_trend.cf.bounds\n",
-    "            )\n",
+    "            coord\n",
+    "            for coord in (\"longitude\", \"latitude\")\n",
+    "            if coord not in ds_trend.cf.bounds\n",
     "        )\n",
     "        ds_trend = diagnostics.regrid(ds_trend, grid_out, **kwargs)\n",
     "    return ds_trend"
diff --git a/pyproject.toml b/pyproject.toml
index 87b677a..a3e1631 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,8 +51,11 @@ select = [
   # isort
   "I",
   # pydocstyle
-  "D"
+  "D",
+  # pyupgrade
+  "UP"
 ]
+target-version = "py310"
 
 [tool.setuptools]
 packages = ["c3s_eqc_toolbox_template"]
diff --git a/scripts/jupyter_server.py b/scripts/jupyter_server.py
index 0d9ee92..3a9c502 100644
--- a/scripts/jupyter_server.py
+++ b/scripts/jupyter_server.py
@@ -5,7 +5,6 @@
 import pathlib
 import subprocess
 import urllib.parse
-from typing import Optional
 
 logging.basicConfig(level=logging.INFO)
 
@@ -18,11 +17,11 @@
     raise ValueError(f"Working directory must be {expected_dir}")
 
 
-def get_jupyter_server_url(wd_path: pathlib.Path) -> Optional[urllib.parse.ParseResult]:
+def get_jupyter_server_url(wd_path: pathlib.Path) -> urllib.parse.ParseResult | None:
     cmd = ["jupyter", "lab", "list"]
     proc = subprocess.run(cmd, capture_output=True, check=True, text=True)
     for line in proc.stdout.splitlines()[1:]:
-        jupyter_url, jupyter_dir = [segment.strip() for segment in line.split("::")]
+        jupyter_url, jupyter_dir = (segment.strip() for segment in line.split("::"))
         if pathlib.Path(jupyter_dir) == wd_path:
             return urllib.parse.urlparse(jupyter_url)
     return None