diff --git a/pkg/cn-cbor/Makefile.dep b/pkg/cn-cbor/Makefile.dep
new file mode 100644
index 0000000000000000000000000000000000000000..493d7a17cba55d0c2133b874cc8f11a5dceb7c48
--- /dev/null
+++ b/pkg/cn-cbor/Makefile.dep
@@ -0,0 +1 @@
+USEMODULE += posix