diff --git b/rules.mk a/rules.mk | |
index 838754b..19beb65 100644 | |
--- b/rules.mk | |
+++ a/rules.mk | |
@@ -18,7 +18,9 @@ MODULE_RUSTFLAGS += \ | |
--cfg 'feature="zeroize"' \ | |
MODULE_LIBRARY_DEPS := \ | |
- external/rust/crates/pem-rfc7468 \ | |
- external/rust/crates/time \ | |
+ external/rust/crates/const-oid \ | |
+ external/rust/crates/der_derive \ | |
+ external/rust/crates/flagset \ | |
+ external/rust/crates/zeroize \ | |
include make/library.mk |