diff --git a/licenses.txt b/licenses.txt
index 410fbadddc6b9476accde7c6aa316e417459ff2c..8c5c7304bff2f4bccee8accb59a59dd0200eb82a 100644
--- a/licenses.txt
+++ b/licenses.txt
@@ -6,3 +6,7 @@ MPL-2.0:
 MIT:
 = https://spdx.org/licenses/MIT
 - git https://github.com/nektro/zig-extras
+- git https://github.com/nektro/zig-sys-linux
+
+Unspecified:
+- system_lib c