diff --git a/modules/claude/worktree-create.sh b/modules/claude/worktree-create.sh
index 4b3a067..5cc5537 100644
--- a/modules/claude/worktree-create.sh
+++ b/modules/claude/worktree-create.sh
@@ -44,7 +44,7 @@ else
 fi
 
 # Carry uncommitted local config from the main checkout, if present.
-CARRY=(devenv.nix devenv.yaml devenv.lock devenv.local.nix .envrc .env .mcp.json)
+CARRY=(devenv.nix devenv.yaml devenv.lock devenv.local.nix .envrc .env)
 for item in "${CARRY[@]}"; do
   src="$MAIN_ROOT/$item"
   if [ -e "$src" ]; then
diff --git a/modules/fish.nix b/modules/fish.nix
index 2122d97..0615733 100644
--- a/modules/fish.nix
+++ b/modules/fish.nix
@@ -97,7 +97,7 @@
           git -C "$main_root" worktree add -b "$branch" "$dest" "$base_ref"; or return
       end
 
-      for item in .envrc .env devenv.nix devenv.yaml devenv.lock devenv.local.nix .mcp.json
+      for item in .envrc .env devenv.nix devenv.yaml devenv.lock devenv.local.nix
           if test -e "$main_root/$item"
               cp -R "$main_root/$item" "$dest/$item"
           end