diff --git a/idsig/Android.bp b/idsig/Android.bp
index 647915b..90525ff 100644
--- a/idsig/Android.bp
+++ b/idsig/Android.bp
@@ -11,6 +11,7 @@
     rustlibs: [
         "libanyhow",
         "libring",
+        "libnum_traits",
     ],
     proc_macros: ["libnum_derive"],
     multilib: {