diff --git a/justfile b/justfile
index 1e028c6c..660bf9dc 100644
--- a/justfile
+++ b/justfile
@@ -29,7 +29,7 @@ test *args:
     @just _nixos test {{ args }}
 
 update:
-    nix flake update
+    nix flake update --commit-lock-file
 
 _nixos command *args:
     nh os {{ command }} . {{ args }}