diff --git a/crates/languages/src/markdown/config.toml b/crates/languages/src/markdown/config.toml
index 10b1e49757edc106c76e0dc7c591098ebdc6723f..5e7acd230b6f191aebff609bbc1087fbff8d3909 100644
--- a/crates/languages/src/markdown/config.toml
+++ b/crates/languages/src/markdown/config.toml
@@ -1,6 +1,6 @@
 name = "Markdown"
 grammar = "markdown"
-path_suffixes = ["md", "mdx", "mdwn", "markdown", "MD"]
+path_suffixes = ["md", "mdx", "mdwn", "mdc", "markdown", "MD"]
 completion_query_characters = ["-"]
 block_comment = { start = "<!--", prefix = "", end = "-->", tab_size = 0 }
 autoclose_before = ";:.,=}])>"