diff --git a/jsx/lexer.py b/jsx/lexer.py
index 9bc6ec7..22e9e1f 100644
--- a/jsx/lexer.py
+++ b/jsx/lexer.py
@@ -71,6 +71,18 @@ class JsxLexer(JavascriptLexer):
     tokens = JSX_TOKENS
 
 
+class TsxLexer(TypeScriptLexer):
+    name = "react-typescript"
+    aliases = ["tsx", "react-typescript"]
+    filenames = ["*.tsx"]
+    mimetypes = ["text/tsx", "text/typescript-jsx"]
+    mimetypes = ["text/jsx"]
+
+    flags = re.MULTILINE | re.DOTALL | re.UNICODE
+
+    tokens = JSX_TOKENS
+
+
 class TsxLexer(TypeScriptLexer):
     name = "react-typescript"
     aliases = ["tsx", "react-typescript"]