diff --git a/glfw/update-upstream.sh b/glfw/update-upstream.sh
index e6779449..4469eb49 100755
--- a/glfw/update-upstream.sh
+++ b/glfw/update-upstream.sh
@@ -5,9 +5,8 @@ set -ex
 rm -rf upstream/
 mkdir upstream/
 cd upstream/
-git clone https://github.com/glfw/glfw
+git clone --depth 1 --branch 3.3.4 https://github.com/glfw/glfw
 cd glfw/
-git checkout 3.3.4
 
 # Remove non-C files
 rm -rf .appveyor.yml .git .gitattributes .gitignore .mailmap .travis.yml