diff --git a/aider/coder.py b/aider/coder.py
index 19c9bd045..6d04408f1 100755
--- a/aider/coder.py
+++ b/aider/coder.py
@@ -38,7 +38,9 @@ class Coder:
         show_diffs=False,
         auto_commits=True,
         dry_run=False,
+        use_ctags=False,
     ):
+        self.use_ctags = use_ctags
         self.abs_fnames = set()
         self.cur_messages = []
         self.done_messages = []
diff --git a/aider/main.py b/aider/main.py
index 2a9981019..522baa079 100644
--- a/aider/main.py
+++ b/aider/main.py
@@ -81,6 +81,12 @@ def main(args=None, input=None, output=None):
         help=f"Show diffs when committing changes (default: False, ${env_prefix}SHOW_DIFFS)",
         default=bool(int(os.environ.get(f"{env_prefix}SHOW_DIFFS", 0))),
     )
+    parser.add_argument(
+        "--ctags",
+        action="store_true",
+        help=f"Use ctags for file listing (default: False, ${env_prefix}CTAGS)",
+        default=bool(int(os.environ.get(f"{env_prefix}CTAGS", 0))),
+    )
     parser.add_argument(
         "--yes",
         action="store_true",
@@ -108,6 +114,7 @@ def main(args=None, input=None, output=None):
         show_diffs=args.show_diffs,
         auto_commits=args.auto_commits,
         dry_run=args.dry_run,
+        use_ctags=args.ctags,
     )
     if args.auto_commits:
         coder.commit(ask=True, prefix="wip: ", which="repo_files")