diff --git a/vscode-antimony/package.json b/vscode-antimony/package.json
index 35d45a02..4f0c91f5 100644
--- a/vscode-antimony/package.json
+++ b/vscode-antimony/package.json
@@ -178,6 +178,17 @@
 					"ant"
 				],
 				"configuration": "./language-configuration.json"
+			},
+			{
+				"id": "plaintext",
+				"extensions": [
+					".txt"
+				],
+				"aliases": [
+					"Text",
+					"text",
+					"txt"
+				]
 			}
 		],
 		"menus": {