diff --git a/32.md b/32.md
index 0dc7f31..0fb765a 100644
--- a/32.md
+++ b/32.md
@@ -128,6 +128,20 @@ is labeling their note as being related to Milan, Italy using ISO 3166-2.
 }
 ```
 
+Author is labeling their note language as English using ISO-639-1.
+
+```json
+{
+  "kind": 1,
+  "tags": [
+    ["L", "ISO-639-1"],
+    ["l", "en", "ISO-639-1"]
+  ],
+  "content": "English text",
+  ...
+}
+```
+
 Other Notes
 -----------