diff --git a/grep_ast/parsers.py b/grep_ast/parsers.py
index 0a5f336..46aec9b 100644
--- a/grep_ast/parsers.py
+++ b/grep_ast/parsers.py
@@ -46,6 +46,7 @@
     ".scala": "scala",
     ".sql": "sql",
     ".sqlite": "sqlite",
+    ".sw": "sway",
     ".toml": "toml",
     ".tsq": "tsq",
     ".tsx": "typescript",