diff --git a/srcpkgs/attic/template b/srcpkgs/attic/template
index e36deb7195a..03afe0eb795 100644
--- a/srcpkgs/attic/template
+++ b/srcpkgs/attic/template
@@ -23,7 +23,7 @@ pre_build() {
 	fi
 }
 post_build() {
-	PYTHONPATH=.. make -C docs man SPHINXBUILD=sphinx-build3
+	PYTHONPATH=.. make -C docs man SPHINXBUILD=sphinx-build3.4
 }
 post_install() {
 	vlicense LICENSE