diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f4c19e2..eb18251 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -12,7 +12,7 @@ repos:
         args: ["--maxkb=500"]
 
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 25.11.0
+    rev: 26.1.0
     hooks:
       - id: black-jupyter
 
@@ -23,6 +23,6 @@ repos:
         args: ["--ignore-words-list=gis,timeseries", "--skip=*.json,*.csv"]
 
   - repo: https://github.com/kynan/nbstripout
-    rev: 0.8.2
+    rev: 0.9.0
     hooks:
       - id: nbstripout
diff --git a/book/geospatial/duckdb.ipynb b/book/geospatial/duckdb.ipynb
index 442a3c0..b543d79 100644
--- a/book/geospatial/duckdb.ipynb
+++ b/book/geospatial/duckdb.ipynb
@@ -363,12 +363,10 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "con.sql(\n",
-    "    \"\"\"\n",
+    "con.sql(\"\"\"\n",
     "        CREATE TABLE IF NOT EXISTS cities2 AS \n",
     "        SELECT * FROM ST_Read('cities.shp')\n",
-    "        \"\"\"\n",
-    ")"
+    "        \"\"\")"
    ]
   },
   {
@@ -411,13 +409,11 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "con.sql(\n",
-    "    \"\"\"\n",
+    "con.sql(\"\"\"\n",
     "CREATE TABLE IF NOT EXISTS cities3 AS\n",
     "SELECT * EXCLUDE geometry, ST_GeomFromWKB(geometry) \n",
     "AS geometry FROM 'cities.parquet'\n",
-    "\"\"\"\n",
-    ")"
+    "\"\"\")"
    ]
   },
   {
@@ -435,13 +431,11 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "con.sql(\n",
-    "    \"\"\"\n",
+    "con.sql(\"\"\"\n",
     "CREATE TABLE IF NOT EXISTS country AS\n",
     "SELECT * EXCLUDE geometry, ST_GeomFromWKB(geometry) FROM\n",
     "        's3://us-west-2.opendata.source.coop/google-research-open-buildings/v2/geoparquet-admin1/country=SSD/*.parquet'\n",
-    "\"\"\"\n",
-    ")"
+    "\"\"\")"
    ]
   },
   {
diff --git a/book/geospatial/maplibre.ipynb b/book/geospatial/maplibre.ipynb
index 68ac4ee..5c6574a 100644
--- a/book/geospatial/maplibre.ipynb
+++ b/book/geospatial/maplibre.ipynb
@@ -2816,7 +2816,6 @@
    "source": [
     "import numpy as np\n",
     "\n",
-    "\n",
     "# Generate the icon data\n",
     "width = 64  # The image will be 64 pixels square\n",
     "height = 64\n",