diff --git a/docs/Makefile b/docs/Makefile
index 2e07b01..4f77cc3 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -3,7 +3,7 @@
 
 # You can set these variables from the command line.
 SPHINXOPTS    = -j auto -T $(FAIL_WARN)
-SPHINXBUILD   = sphinx-build
+SPHINXBUILD   = sphinx-build-3
 SPHINXPROJ    = kitty
 SOURCEDIR     = .
 BUILDDIR      = _build