diff --git a/README.md b/README.md
index 3f723c9..3e752f5 100644
--- a/README.md
+++ b/README.md
@@ -56,8 +56,11 @@ A [devdocs](https://devdocs.io) client
         "http",
         -- "css",
         -- "javascript",
-        "lua~5.1",
         -- "rust",
+        -- some docs such as lua require version number along with the language name
+        -- check `DevDocs install` to view the actual names of the docs
+        "lua~5.1",
+        -- "openjdk~21"
       },
     },
   },