diff --git a/package.json b/package.json
index 89f9da6d..79775b0b 100644
--- a/package.json
+++ b/package.json
@@ -118,6 +118,7 @@
     },
     "linux": {
       "category": "Office;TextEditor;Utility",
+      "mimeTypes": [ "text/markdown" ],
       "icon": "resources/icons",
       "artifactName": "marktext-${version}-${arch}.${ext}",
       "target": [
diff --git a/resources/linux/marktext.desktop b/resources/linux/marktext.desktop
index b6b46e38..f909c8d6 100644
--- a/resources/linux/marktext.desktop
+++ b/resources/linux/marktext.desktop
@@ -6,3 +6,4 @@ Terminal=false
 Type=Application
 Icon=marktext
 Categories=Office;TextEditor;Utility;
+MimeType=text/markdown;