diff --git a/pkg/libcose/Makefile b/pkg/libcose/Makefile
index d645544d40..1fb4ee768f 100644
--- a/pkg/libcose/Makefile
+++ b/pkg/libcose/Makefile
@@ -1,6 +1,6 @@
 PKG_NAME=libcose
 PKG_URL=https://github.com/bergzand/libcose
-PKG_VERSION=8b5f651c3203682a2d98121cd3e5c844cb2b4c36
+PKG_VERSION=3fdf1238987b6aeec113b1872e56307893feeae7
 PKG_LICENSE=LGPL
 
 include $(RIOTBASE)/pkg/pkg.mk
diff --git a/pkg/libcose/Makefile.dep b/pkg/libcose/Makefile.dep
index 2d5f718216..ffd4e2c6ca 100644
--- a/pkg/libcose/Makefile.dep
+++ b/pkg/libcose/Makefile.dep
@@ -10,3 +10,6 @@ endif
 ifneq (,$(filter libcose_crypt_c25519,$(USEMODULE)))
   USEPKG += c25519
 endif
+ifneq (,$(filter libcose_crypt_tinycrypt,$(USEMODULE)))
+  USEPKG += tinycrypt
+endif
diff --git a/pkg/libcose/Makefile.include b/pkg/libcose/Makefile.include
index 92328dc9b3..7342c0b07a 100644
--- a/pkg/libcose/Makefile.include
+++ b/pkg/libcose/Makefile.include
@@ -7,6 +7,9 @@ endif
 ifneq (,$(filter libcose_crypt_c25519,$(USEMODULE)))
   CFLAGS += -DCRYPTO_C25519
 endif
+ifneq (,$(filter libcose_crypt_tinycrypt,$(USEMODULE)))
+  CFLAGS += -DCRYPTO_TINYCRYPT
+endif
 
 # Declare pseudomodules here to be selfcontained
 PSEUDOMODULES += libcose_crypt_%
diff --git a/pkg/libcose/patches/0001-RIOT-Use-RIOT-random_bytes-function-instead-of-rando.patch b/pkg/libcose/patches/0001-RIOT-Use-RIOT-random_bytes-function-instead-of-rando.patch
index 66a174ab70..831e6e8af0 100644
--- a/pkg/libcose/patches/0001-RIOT-Use-RIOT-random_bytes-function-instead-of-rando.patch
+++ b/pkg/libcose/patches/0001-RIOT-Use-RIOT-random_bytes-function-instead-of-rando.patch
@@ -67,20 +67,19 @@ index c24d751..3bdcabf 100644
  }
  #endif /* CRYPTO_HACL_INCLUDE_CHACHAPOLY */
 diff --git a/src/crypt/monocypher.c b/src/crypt/monocypher.c
-index 9e4dcbc..d1fcac1 100644
+index f3186f7..fd27839 100644
 --- a/src/crypt/monocypher.c
 +++ b/src/crypt/monocypher.c
-@@ -17,8 +17,7 @@
- #include <monocypher.h>
+@@ -19,7 +19,7 @@
  #include "cose/crypto.h"
  #include "cose/crypto/selectors.h"
--
+ 
 -extern void randombytes(uint8_t *target, uint64_t n);
 +#include "random.h"
+ static const uint8_t zero[32] = { 0 };
  
  #ifdef CRYPTO_MONOCYPHER_INCLUDE_CHACHAPOLY
- static uint32_t load32_le(const uint8_t *u)
-@@ -105,7 +104,7 @@ COSE_ssize_t cose_crypto_keygen_chachapoly(uint8_t *sk, size_t len)
+@@ -109,7 +109,7 @@ COSE_ssize_t cose_crypto_keygen_chachapoly(uint8_t *sk, size_t len)
      if (len < 64) {
          return COSE_ERR_NOMEM;
      }
@@ -89,14 +88,14 @@ index 9e4dcbc..d1fcac1 100644
      return 64;
  }
  #endif /* CRYPTO_MONOCYPHER_INCLUDE_CHACHAPOLY */
-@@ -133,7 +132,7 @@ static void _ed25519_clamp(uint8_t *key)
+@@ -137,7 +137,7 @@ static void _ed25519_clamp(uint8_t *key)
  
  void cose_crypto_keypair_ed25519(cose_key_t *key)
  {
 -    randombytes(key->d, COSE_CRYPTO_SIGN_ED25519_SECRETKEYBYTES);
 +    random_bytes(key->d, COSE_CRYPTO_SIGN_ED25519_SECRETKEYBYTES);
      _ed25519_clamp(key->d);
-     crypto_sign_public_key(key->x, key->d);
+     crypto_ed25519_public_key(key->x, key->d);
  }
 -- 
 2.21.0
diff --git a/pkg/tinycrypt/Makefile b/pkg/tinycrypt/Makefile
index 4889b1e382..a85b1d2e40 100644
--- a/pkg/tinycrypt/Makefile
+++ b/pkg/tinycrypt/Makefile
@@ -5,5 +5,5 @@ PKG_LICENSE=BSD-3-Clause
 
 include $(RIOTBASE)/pkg/pkg.mk
 
-all:
-	$(QQ)"$(MAKE)" -C $(PKG_SOURCE_DIR)/lib/source/ -f $(RIOTBASE)/Makefile.base MODULE=$(PKG_NAME)
+all: Makefile.tinycrypt
+	$(QQ)"$(MAKE)" -C $(PKG_SOURCE_DIR)/lib/source/ -f $(CURDIR)/Makefile.tinycrypt -f $(RIOTBASE)/Makefile.base MODULE=$(PKG_NAME)
diff --git a/pkg/tinycrypt/Makefile.tinycrypt b/pkg/tinycrypt/Makefile.tinycrypt
new file mode 100644
index 0000000000..ded7429150
--- /dev/null
+++ b/pkg/tinycrypt/Makefile.tinycrypt
@@ -0,0 +1 @@
+SRC = $(filter-out ecc_platform_specific.c,$(wildcard *.c))