diff --git b/rules.mk a/rules.mk
index 0f6f56e..3443250 100644
--- b/rules.mk
+++ a/rules.mk
@@ -12,6 +12,5 @@ MODULE_RUSTFLAGS += \
 	--cfg 'feature="db"' \
 
 MODULE_LIBRARY_DEPS := \
-	external/rust/crates/arbitrary \
 
 include make/library.mk