diff --git a/Makefile b/Makefile
index 9ffb2897c104..80e50360a37e 100644
--- a/Makefile
+++ b/Makefile
@@ -131,6 +131,7 @@ update-metadata: build
 .PHONY: doc-setup
 doc-setup: client
 	@echo "Setting up documentation build environment"
+	pip3 install gitpython
 	cd doc; LOCAL_SPHINX_BUILD=True python3 .sphinx/build_requirements.py
 	python3 -m venv doc/.sphinx/venv
 	. $(SPHINXENV) ; pip install --require-virtualenv --upgrade -r doc/.sphinx/requirements.txt --log doc/.sphinx/venv/pip_install.log
diff --git a/doc/.readthedocs.yaml b/doc/.readthedocs.yaml
index 80bd02411c16..df0a605e53a9 100644
--- a/doc/.readthedocs.yaml
+++ b/doc/.readthedocs.yaml
@@ -13,6 +13,7 @@ build:
     python: "3.11"
   jobs:
     post_checkout:
+      - python3 -m pip install gitpython
       - cd doc; python3 .sphinx/build_requirements.py
     pre_build:
       - go build -ldflags "-s -w" -o trimpath -o lxc.bin ./lxc