diff --git a/kernel/Cargo.toml b/kernel/Cargo.toml
index d91aeae3c..45bddbacb 100644
--- a/kernel/Cargo.toml
+++ b/kernel/Cargo.toml
@@ -52,7 +52,7 @@ gimli = { version = "0.26", default-features = false, features = ["read", "endia
 gdbstub = { git = "https://github.com/daniel5151/gdbstub.git", branch = "dev/0.6", default-features = false, features = ["alloc"] }
 gdbstub_arch = { git = "https://github.com/daniel5151/gdbstub.git", branch = "dev/0.6" }
 # Optional external libraries:
-addr2line = { version = "0.16", default-features = false, features = ["rustc-demangle"], optional = true }
+addr2line = { version = "0.21", default-features = false, features = ["rustc-demangle"], optional = true }
 smoltcp = { version = "0.8.0", default-features = false, features = [ "alloc", "log", "proto-ipv4", "proto-igmp", "proto-dhcpv4", "socket-raw", "socket-icmp", "socket-udp", "socket-tcp" ], optional = true }
 
 [[bin]]