diff --git a/Cargo.toml b/Cargo.toml
index 99a1d57c..a43c8998 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Philipp Oppermann <dev@phil-opp.com>"]
 edition = "2018"
 
 [dependencies]
-bootloader = "0.4.0"
+bootloader = { version = "0.4.0", features = ["map_physical_memory"]}
 volatile = "0.2.3"
 spin = "0.4.9"
 uart_16550 = "0.1.0"