diff --git a/data/langdb.yaml b/data/langdb.yaml
index 0ac2920..25e7b9e 100644
--- a/data/langdb.yaml
+++ b/data/langdb.yaml
@@ -370,6 +370,7 @@ languages:
   lg: [Latn, [AF], Luganda]
   li: [Latn, [EU], Limburgs]
   lij: [Latn, [EU], Ligure]
+  lij-mc: [Latn, [EU], munegascu]
   liv: [Latn, [EU], Līvõ kēļ]
   lki: [Arab, [AS, ME], لەکی]
   lkt: [Latn, [AM], Lakȟótiyapi]
diff --git a/data/language-data.json b/data/language-data.json
index 6051788..99a6ef5 100644
--- a/data/language-data.json
+++ b/data/language-data.json
@@ -2382,6 +2382,13 @@
             ],
             "Ligure"
         ],
+        "lij-mc": [
+            "Latn",
+            [
+                "EU"
+            ],
+            "munegascu"
+        ],
         "liv": [
             "Latn",
             [