diff --git a/etc/apt/preferences.d/limit-unstable b/etc/apt/preferences.d/limit-unstable
new file mode 100644
index 00000000..28a492e3
--- /dev/null
+++ b/etc/apt/preferences.d/limit-unstable
@@ -0,0 +1,4 @@
+# Copied from https://www.wireguard.com/install/
+Package: *
+Pin: release a=unstable
+Pin-Priority: 90