diff --git a/.gitignore b/.gitignore
index 7a7593bce..dc12232d4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,6 +25,8 @@ docs/notebooks/*.geojson
 docs/notebooks/*.kml
 docs/notebooks/*.nc
 docs/notebooks/*.csv
+docs/notebooks/*.png
+docs/notebooks/*.gif
 docs/notebooks/**/*.tif
 examples/notebooks/*.html
 examples/notebooks/*.tif
diff --git a/requirements_docs.txt b/requirements_docs.txt
index ffe53be83..1514a084f 100644
--- a/requirements_docs.txt
+++ b/requirements_docs.txt
@@ -4,8 +4,8 @@ flake8
 grip
 ipykernel
 livereload
-nbconvert==6.5.3
-nbformat==5.4.0
+nbconvert
+nbformat
 pip
 sphinx
 tox
@@ -15,8 +15,8 @@ wheel
 mkdocs
 mkdocs-git-revision-date-plugin 
 mkdocs-git-revision-date-localized-plugin
-mkdocs-jupyter
-mkdocs-material 
+mkdocs-jupyter>=0.23.1
+mkdocs-material>=9.1.3 
 mkdocs-pdf-export-plugin
 mkdocstrings 
 mkdocstrings-crystal