diff --git a/docs/requirements.in b/docs/requirements.in
index 3af028a..27e1dba 100644
--- a/docs/requirements.in
+++ b/docs/requirements.in
@@ -13,7 +13,7 @@ sphinx-rtd-theme
 ipykernel  # https://stackoverflow.com/a/76855162/17332200
 ipython-genutils  # implicit nbsphinx requirement? missing on CI
 jinja2==3.0.3  # https://github.com/d2l-ai/d2l-book/issues/46#issuecomment-1262704457
-nbconvert==6.4.2  # https://github.com/spatialaudio/nbsphinx/issues/466
+nbconvert==7.13.1  # https://github.com/spatialaudio/nbsphinx/issues/466
 OWSLib  # needed by cartopy
 pykdtree  # needed by owslib
 pypandoc-binary  # https://stackoverflow.com/a/71585691/17332200
diff --git a/docs/requirements.txt b/docs/requirements.txt
index a592f66..fa3dde8 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -14,10 +14,12 @@ attrs==23.1.0
     #   referencing
 babel==2.14.0
     # via sphinx
+beautifulsoup4==4.12.2
+    # via nbconvert
 bleach==6.1.0
     # via nbconvert
 cartopy==0.22.0
-    # via -r requirements.in
+    # via -r docs/requirements.in
 certifi==2023.11.17
     # via
     #   pyproj
@@ -41,8 +43,6 @@ docutils==0.20.1
     #   nbsphinx
     #   sphinx
     #   sphinx-rtd-theme
-entrypoints==0.4
-    # via nbconvert
 exceptiongroup==1.2.0
     # via ipython
 executing==2.0.1
@@ -56,18 +56,18 @@ idna==3.6
 imagesize==1.4.1
     # via sphinx
 ipykernel==6.27.1
-    # via -r requirements.in
+    # via -r docs/requirements.in
 ipython==8.18.1
     # via
-    #   -r requirements.in
+    #   -r docs/requirements.in
     #   ipykernel
 ipython-genutils==0.2.0
-    # via -r requirements.in
+    # via -r docs/requirements.in
 jedi==0.19.1
     # via ipython
 jinja2==3.0.3
     # via
-    #   -r requirements.in
+    #   -r docs/requirements.in
     #   nbconvert
     #   nbsphinx
     #   sphinx
@@ -92,23 +92,25 @@ kiwisolver==1.4.5
 lxml==4.9.4
     # via owslib
 markupsafe==2.1.3
-    # via jinja2
+    # via
+    #   jinja2
+    #   nbconvert
 matplotlib==3.8.2
     # via
-    #   -r requirements.in
+    #   -r docs/requirements.in
     #   cartopy
     #   seaborn
 matplotlib-inline==0.1.6
     # via
     #   ipykernel
     #   ipython
-mistune==0.8.4
+mistune==3.0.2
     # via nbconvert
 nbclient==0.5.13
     # via nbconvert
-nbconvert==6.4.2
+nbconvert==7.13.1
     # via
-    #   -r requirements.in
+    #   -r docs/requirements.in
     #   nbsphinx
 nbformat==5.9.2
     # via
@@ -116,14 +118,14 @@ nbformat==5.9.2
     #   nbconvert
     #   nbsphinx
 nbsphinx==0.9.3
-    # via -r requirements.in
+    # via -r docs/requirements.in
 nest-asyncio==1.5.8
     # via
     #   ipykernel
     #   nbclient
 numpy==1.26.2
     # via
-    #   -r requirements.in
+    #   -r docs/requirements.in
     #   cartopy
     #   contourpy
     #   matplotlib
@@ -133,16 +135,17 @@ numpy==1.26.2
     #   seaborn
     #   shapely
 owslib==0.29.3
-    # via -r requirements.in
+    # via -r docs/requirements.in
 packaging==23.2
     # via
     #   cartopy
     #   ipykernel
     #   matplotlib
+    #   nbconvert
     #   sphinx
 pandas==2.1.4
     # via
-    #   -r requirements.in
+    #   -r docs/requirements.in
     #   seaborn
 pandocfilters==1.5.0
     # via nbconvert
@@ -168,9 +171,9 @@ pygments==2.17.2
     #   nbconvert
     #   sphinx
 pykdtree==1.3.10
-    # via -r requirements.in
+    # via -r docs/requirements.in
 pypandoc-binary==1.12
-    # via -r requirements.in
+    # via -r docs/requirements.in
 pyparsing==3.1.1
     # via matplotlib
 pyproj==3.6.1
@@ -206,9 +209,9 @@ rpds-py==0.15.2
     #   jsonschema
     #   referencing
 scipy==1.11.4
-    # via -r requirements.in
+    # via -r docs/requirements.in
 seaborn==0.13.0
-    # via -r requirements.in
+    # via -r docs/requirements.in
 shapely==2.0.2
     # via cartopy
 six==1.16.0
@@ -218,9 +221,11 @@ six==1.16.0
     #   python-dateutil
 snowballstemmer==2.2.0
     # via sphinx
+soupsieve==2.5
+    # via beautifulsoup4
 sphinx==7.2.6
     # via
-    #   -r requirements.in
+    #   -r docs/requirements.in
     #   nbsphinx
     #   sphinx-copybutton
     #   sphinx-rtd-theme
@@ -231,9 +236,9 @@ sphinx==7.2.6
     #   sphinxcontrib-qthelp
     #   sphinxcontrib-serializinghtml
 sphinx-copybutton==0.5.2
-    # via -r requirements.in
+    # via -r docs/requirements.in
 sphinx-rtd-theme==2.0.0
-    # via -r requirements.in
+    # via -r docs/requirements.in
 sphinxcontrib-applehelp==1.0.7
     # via sphinx
 sphinxcontrib-devhelp==1.0.5
@@ -250,7 +255,7 @@ sphinxcontrib-serializinghtml==1.1.9
     # via sphinx
 stack-data==0.6.3
     # via ipython
-testpath==0.6.0
+tinycss2==1.2.1
     # via nbconvert
 tornado==6.4
     # via
@@ -275,4 +280,6 @@ urllib3==2.1.0
 wcwidth==0.2.12
     # via prompt-toolkit
 webencodings==0.5.1
-    # via bleach
+    # via
+    #   bleach
+    #   tinycss2