--- ./doc/Makefile.in.org	2022-06-10 06:33:42 +0000
+++ ./doc/Makefile.in	2022-06-10 06:34:00 +0000
@@ -255,7 +255,7 @@
 	gettingstarted.rst github_commits.c index.rst threadsafety.rst  \
 	tutorial.rst upgrading.rst ext/refcounting.py
 
-SPHINXBUILD = sphinx-build
+SPHINXBUILD = sphinx-build-3
 SPHINXOPTS = -d _build/doctrees $(SPHINXOPTS_EXTRA)
 all: all-am