diff --git a/artiq/firmware/runtime/Cargo.toml b/artiq/firmware/runtime/Cargo.toml
index 217c64606..30f912249 100644
--- a/artiq/firmware/runtime/Cargo.toml
+++ b/artiq/firmware/runtime/Cargo.toml
@@ -16,7 +16,7 @@ build_artiq = { path = "../libbuild_artiq" }
 alloc_artiq = { path = "../liballoc_artiq" }
 std_artiq = { path = "../libstd_artiq", features = ["alloc"] }
 logger_artiq = { path = "../liblogger_artiq" }
-log = { version = "0.3", default-features = false, features = [] }
+log = { version = "0.3", default-features = false, features = ["max_level_debug"] }
 board = { path = "../libboard", features = ["uart_console"] }
 fringe = { version = "= 1.1.0", default-features = false, features = ["alloc"] }
 byteorder = { version = "1.0", default-features = false }