diff --git a/.gitignore b/.gitignore
index 8c0e27032..2729026dc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -71,10 +71,6 @@ examples/.ipynb_checkpoints
 # Django stuff
 *.log
 
-# Sphinx documentation
-doc/_build/
-doc/generated/
-
 # PyBuilder
 target/
 
@@ -89,19 +85,3 @@ benchmarks
 
 # version file generated by setuptools-scm
 plotnine/_version.py
-
-
-# Documentation
-doc/examples
-doc/reference/
-doc/_site/
-doc/_inv/
-doc/_extensions/
-doc/.quarto/
-doc/gallery/thumbnails
-doc/objects.json
-doc/objects.txt
-doc/.luarc.json
-doc/_environment
-doc/_variables.yml
-doc/site_libs
diff --git a/doc/.gitignore b/doc/.gitignore
index 5eb133eb4..278e16803 100644
--- a/doc/.gitignore
+++ b/doc/.gitignore
@@ -1,2 +1,15 @@
-/.quarto/
+.quarto/
+_extensions/
+_site/
+site_libs/
+_environment
+_variables.yml
+
+# quartodoc
+_inv/
+reference/
 qrenderer.scss
+objects.json
+objects.txt
+objects.inv
+gallery/thumbnails
diff --git a/doc/Makefile b/doc/Makefile
index c6ba94867..6bdc8dc43 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -14,6 +14,13 @@ for line in sys.stdin:
 endef
 export PRINT_HELP_PYSCRIPT
 
+define CREATE_OBJECTS_INV
+import sphobjinv as soi
+inv = soi.Inventory(source="objects.txt")
+soi.writebytes("objects.inv", soi.compress(inv.data_file()))
+endef
+export CREATE_OBJECTS_INV
+
 QRENDERER_STYLE_FILE=qrenderer.scss
 QRENDERER_STYLE_URL=https://raw.githubusercontent.com/has2k1/qrenderer/main/doc/qrenderer.scss
 
@@ -27,6 +34,8 @@ clean:  ## Remove build artefacts
 	rm -rf reference/
 	rm -rf _site/
 	rm -rf _inv/
+	rm objects.txt
+	rm objects.inv
 
 readme-images:
 	cd images; python readme_images.py
@@ -49,6 +58,7 @@ config:  ## Configure project for quartodoc and quarto
 
 docstrings: config  ## Generate qmd files from the docstrings
 	quartodoc build --config _quartodoc.yml
+	@python -c "$$CREATE_OBJECTS_INV"
 
 html: docstrings download_qrenderer_style ## Build html site
 	quarto render
diff --git a/doc/_quarto.yml b/doc/_quarto.yml
index b417868f6..48bcf6d5a 100644
--- a/doc/_quarto.yml
+++ b/doc/_quarto.yml
@@ -1,7 +1,7 @@
 project:
   type: website
   resources:
-    - objects.txt
+    - objects.inv
   render:
     - "reference/**.qmd"
     - "*.qmd"