diff --git a/.cspell/libraries.txt b/.cspell/libraries.txt
index d1ab97662..9d2926186 100644
--- a/.cspell/libraries.txt
+++ b/.cspell/libraries.txt
@@ -36,6 +36,7 @@ jsfiddle
 jsonschema
 katex
 khroma
+langium
 mathml
 matplotlib
 mdbook