diff --git a/Fig3_PyGMT_backgrounds.ipynb b/Fig3_PyGMT_backgrounds.ipynb
index d108b18..0b43ee7 100644
--- a/Fig3_PyGMT_backgrounds.ipynb
+++ b/Fig3_PyGMT_backgrounds.ipynb
@@ -38,7 +38,7 @@
     "    fig.basemap(region=region, projection=\"M?\", panel=2)\n",
     "    fig.grdimage(grid=grd_relief, cmap=\"SCM/oleron\", shading=True)\n",
     "    fig.colorbar(\n",
-    "        frame=[\"xa500f250+lElevation\", \"y+lm\"],\n",
+    "        annot=500, tick=250, label=\"Elvation\", unit=\"m\",\n",
     "        position=Position(\"MR\", cstype=\"outside\"),\n",
     "        shading=True,\n",
     "    )\n",
@@ -75,7 +75,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.12.7"
+   "version": "3.12.8"
   }
  },
  "nbformat": 4,
diff --git a/Fig4_PyGMT_pandas.ipynb b/Fig4_PyGMT_pandas.ipynb
index 542a8fd..2c9c8af 100644
--- a/Fig4_PyGMT_pandas.ipynb
+++ b/Fig4_PyGMT_pandas.ipynb
@@ -45,7 +45,7 @@
     "    cmap=True,\n",
     "    pen=\"gray10\",\n",
     ")\n",
-    "fig.colorbar(frame=[\"xaf+lHypocentral depth\", \"y+lkm\"])\n",
+    "fig.colorbar(annot=True, tick=True, label=\"Hypocentral depth\", unit=\"km\"])\n",
     "# Add legend for size-coding\n",
     "legend = io.StringIO(\n",
     "    \"\\n\".join(f\"S 0.4 c {0.005 * 2**mag:.2f} - 1p 1 M {mag}\" for mag in [5, 6, 7])\n",
@@ -90,7 +90,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "pygmt",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
diff --git a/Fig5_PyGMT_xarray.ipynb b/Fig5_PyGMT_xarray.ipynb
index 6e94561..7afa015 100644
--- a/Fig5_PyGMT_xarray.ipynb
+++ b/Fig5_PyGMT_xarray.ipynb
@@ -21,7 +21,7 @@
     "fig.shift_origin(xshift=\"w+0.5c\")\n",
     "fig.grdimage(mars_filter, shading=mars_grad, projection=\"G90/-20/12c\", frame=\"g30\")\n",
     "fig.colorbar(\n",
-    "    frame=[\"xa2000f1000+lElevation\", \"y+lm\"],\n",
+    "    annot=2000, tick=1000, label=\"Elevation\", unit=\"m\",\n",
     "    position=Position(\"BC\", cstype=\"outside\", offset=(-6.25, 0.2)),\n",
     "    bg_triangle=True,\n",
     "    fg_triangle=True,\n",
@@ -34,7 +34,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "pygmt",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
diff --git a/Fig6_PyGMT_geopandas.ipynb b/Fig6_PyGMT_geopandas.ipynb
index 002cb60..107c08b 100644
--- a/Fig6_PyGMT_geopandas.ipynb
+++ b/Fig6_PyGMT_geopandas.ipynb
@@ -28,7 +28,7 @@
     "pygmt.makecpt(cmap=\"SCM/hawaii\", series=[0, states[\"area\"].max()], reverse=True)\n",
     "fig.choropleth(states, pen=\"0.2p,gray50\", column=\"area\")\n",
     "fig.colorbar(\n",
-    "    frame=\"xaf+lArea (1000 km@+2@+)\",\n",
+    "    annot=True, tick=True, label=\"Area (1000 km@+2@+)\",\n",
     "    position=Position(\"BR\", offset=(1.9, 0.2)),\n",
     "    length=3,\n",
     "    width=0.15,\n",
@@ -68,7 +68,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "pygmt",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },