diff --git a/direnvrc b/direnvrc
index 29c3aca..d9629c7 100644
--- a/direnvrc
+++ b/direnvrc
@@ -198,8 +198,10 @@ use_flake() {
     local flake_input_paths
     rm -rf "$flake_inputs"
     mkdir "$flake_inputs"
-    flake_input_paths=$("${NIX_BIN_PREFIX}nix" flake archive --json \
+    flake_input_paths=$("${NIX_BIN_PREFIX}nix" flake archive \
+      --json \
       --extra-experimental-features "nix-command flakes" \
+      --no-write-lock-file \
       "$flake_dir" | grep -E -o '/nix/store/[^"]+')
     for path in $flake_input_paths; do
       _nix_add_gcroot "$path" "${flake_inputs}/${path##*/}"