--- a/crates/jsonnet-parser/Cargo.toml
+++ b/crates/jsonnet-parser/Cargo.toml
@@ -4,7 +4,10 @@
 authors = ["Лач <iam@lach.pw>"]
 edition = "2018"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[features]
+default = []
+# Trace peg token parsing
+trace = ["peg/trace"]
 
 [dependencies]
 peg = "0.6.2"