diff --git a/.ruby-version b/.ruby-version
index 73462a5a..743af5e1 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.5.1
+2.6.8
diff --git a/preview_setup.sh b/preview_setup.sh
index 0bba7530..14052d9e 100755
--- a/preview_setup.sh
+++ b/preview_setup.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 rm -rf pytorch.github.io
-git clone --recursive https://github.com/pytorch/pytorch.github.io.git -b site
+git clone --recursive https://github.com/pytorch/pytorch.github.io.git -b site --depth 1
 cp *.md pytorch.github.io/_hub
 cp images/* pytorch.github.io/assets/images/