diff --git a/docs/Makefile b/docs/Makefile
index 6f26ca799..1f299ec6b 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -3,7 +3,7 @@
 
 # You can set these variables from the command line.
 SPHINXOPTS    =
-SPHINXBUILD   = sphinx-build-3.6
+SPHINXBUILD   = sphinx-build
 SOURCEDIR     = source
 BUILDDIR      = build