diff --git a/crates/zed/src/languages/markdown/config.toml b/crates/zed/src/languages/markdown/config.toml
index 6aa76601c9ca896c17c6ee211d6514065bd9a987..2fa3ff3cf2aba297517494cbd1f2e0608daaa402 100644
--- a/crates/zed/src/languages/markdown/config.toml
+++ b/crates/zed/src/languages/markdown/config.toml
@@ -1,5 +1,5 @@
 name = "Markdown"
-path_suffixes = ["md"]
+path_suffixes = ["md", "mdx"]
 brackets = [
     { start = "{", end = "}", close = true, newline = true },
     { start = "[", end = "]", close = true, newline = true },