diff --git a/Makefile.dep b/Makefile.dep
index 72a9557b1cf3..6f58e65ec6ad 100644
--- a/Makefile.dep
+++ b/Makefile.dep
@@ -1,3 +1,11 @@
+ifneq (,$(filter libcoap,$(USEPKG)))
+    USEMODULE += pnet
+endif
+
+ifneq (,$(filter pnet,$(USEMODULE)))
+    USEMODULE += vtimer
+endif
+
 ifneq (,$(filter gnrc_%,$(filter-out gnrc_netapi gnrc_netreg gnrc_netif% gnrc_pktbuf,$(USEMODULE))))
   USEMODULE += gnrc
 endif