diff --git a/crates/zed/src/languages/json/config.toml b/crates/zed/src/languages/json/config.toml
index ad87dcf63322f321d025a1480e77d6e9bfdb11f7..cb36279358a50dd138b0e9d0632b559895c19cd3 100644
--- a/crates/zed/src/languages/json/config.toml
+++ b/crates/zed/src/languages/json/config.toml
@@ -1,5 +1,6 @@
 name = "JSON"
 path_suffixes = ["json"]
+line_comment = "// "
 autoclose_before = ",]}"
 brackets = [
     { start = "{", end = "}", close = true, newline = true },