diff --git a/pkg/monocypher/Makefile b/pkg/monocypher/Makefile
index fcd96b64c9..c0c354c90d 100644
--- a/pkg/monocypher/Makefile
+++ b/pkg/monocypher/Makefile
@@ -1,6 +1,6 @@
 PKG_NAME=monocypher
 PKG_URL=https://github.com/LoupVaillant/Monocypher
-PKG_VERSION=d9cc2aea29158971ed4b7dc074efdcb35e7183d5
+PKG_VERSION=ff334e288a667c5cd8500c04d1e2ebd601b9f215
 PKG_LICENSE=CC-0
 
 include $(RIOTBASE)/pkg/pkg.mk
diff --git a/pkg/monocypher/Makefile.dep b/pkg/monocypher/Makefile.dep
index 2a90b71378..21096b0b43 100644
--- a/pkg/monocypher/Makefile.dep
+++ b/pkg/monocypher/Makefile.dep
@@ -1,4 +1,5 @@
-USEMODULE += monocypher_sha512
+# SHA-512 & ED25519
+USEMODULE += monocypher_optional
 
 # monocypher is only supported by 32 bit architectures
 FEATURES_REQUIRED += arch_32bit
diff --git a/pkg/monocypher/Makefile.include b/pkg/monocypher/Makefile.include
index a72d0d8d33..6309a213f7 100644
--- a/pkg/monocypher/Makefile.include
+++ b/pkg/monocypher/Makefile.include
@@ -1,7 +1,8 @@
 INCLUDES += -I$(PKGDIRBASE)/monocypher/src
 INCLUDES += -I$(PKGDIRBASE)/monocypher/src/optional
 
-ifneq (,$(filter monocypher_sha512,$(USEMODULE)))
-  CFLAGS += -DED25519_SHA512
+ifneq (,$(filter monocypher_optional,$(USEMODULE)))
   DIRS += $(PKGDIRBASE)/monocypher/src/optional
 endif
+
+CFLAGS += -DBLAKE2_NO_UNROLLING
diff --git a/pkg/monocypher/patches/0001-Monocypher-add-riot-makefiles.patch b/pkg/monocypher/patches/0001-Monocypher-add-riot-makefiles.patch
index cba5754d54..eacf2f9eff 100644
Binary files a/pkg/monocypher/patches/0001-Monocypher-add-riot-makefiles.patch and b/pkg/monocypher/patches/0001-Monocypher-add-riot-makefiles.patch differ