1diff --git b/rules.mk a/rules.mk
2index c7476cb..0257d05 100644
3--- b/rules.mk
4+++ a/rules.mk
5@@ -13,9 +13,6 @@ MODULE_RUSTFLAGS += \
6
7 MODULE_LIBRARY_DEPS := \
8 	external/rust/crates/der \
9-	external/rust/crates/pkcs5 \
10-	external/rust/crates/rand_core \
11 	external/rust/crates/spki \
12-	external/rust/crates/subtle \
13
14 include make/library.mk
15