diff --git a/.justfile b/.justfile
index 74ba154..4927b8a 100644
--- a/.justfile
+++ b/.justfile
@@ -10,6 +10,10 @@ print-recipes:
 update:
     nix flake update
 
+# Update a single input
+update-input input:
+    nix flake lock --update-input {{input}}
+
 alias build := build-nixos
 # Build a NixOS configuration
 build-nixos host=`hostname`: