diff --git a/aider/args.py b/aider/args.py
index e20d99db4..554931fa8 100644
--- a/aider/args.py
+++ b/aider/args.py
@@ -823,6 +823,12 @@ def get_parser(default_config_files, git_root):
         "--editor",
         help="Specify which editor to use for the /editor command",
     )
+    group.add_argument(
+        "--install-tree-sitter-language-pack",
+        action="store_true",
+        help="Install the tree_sitter_language_pack (experimental)",
+        default=False,
+    )
 
     return parser
 
diff --git a/aider/main.py b/aider/main.py
index e44961258..6c0468689 100644
--- a/aider/main.py
+++ b/aider/main.py
@@ -214,6 +214,15 @@ def check_streamlit_install(io):
     )
 
 
+def install_tree_sitter_language_pack(io):
+    return utils.check_pip_install_extra(
+        io,
+        "tree_sitter_language_pack",
+        "Install tree_sitter_language_pack?",
+        ["tree-sitter-language-pack", "tree-sitter"],
+    )
+
+
 def write_streamlit_credentials():
     from streamlit.file_util import get_streamlit_file_path
 
@@ -706,6 +715,11 @@ def main(argv=None, input=None, output=None, force_git_root=None, return_coder=F
         analytics.event("exit", reason="Upgrade completed")
         return 0 if success else 1
 
+    if args.install_tree_sitter_language_pack:
+        success = install_tree_sitter_language_pack(io)
+        analytics.event("exit", reason="Install TSLP completed")
+        return 0 if success else 1
+
     if args.check_update:
         check_version(io, verbose=args.verbose)