diff --git a/nix/lib.inc.sh b/nix/lib.inc.sh
index 0e83f35..99eabc9 100644
--- a/nix/lib.inc.sh
+++ b/nix/lib.inc.sh
@@ -6,5 +6,5 @@ function wrap() {
 
     SHELL_NIX="$REPO/shell.nix"
     QUOTED_ARGS="$(printf "${1+ %q}" "$@")"
-    exec nix-shell "$SHELL_NIX" --pure --command "$TOOL $QUOTED_ARGS"
+    exec nix-shell "$SHELL_NIX" --pure --run "$TOOL $QUOTED_ARGS"
 }