diff --git a/pkg/mbedtls/Makefile b/pkg/mbedtls/Makefile
index bf6c695767..bb0fa69b29 100644
--- a/pkg/mbedtls/Makefile
+++ b/pkg/mbedtls/Makefile
@@ -1,6 +1,6 @@
 PKG_NAME=mbedtls
 PKG_URL=https://github.com/ARMmbed/mbedtls.git
-PKG_VERSION=v2.26.0
+PKG_VERSION=8b3f26a5ac38d4fdccbc5c5366229f3e01dafcc0  # v2.28.0
 PKG_LICENSE=Apache-2.0
 
 include $(RIOTBASE)/pkg/pkg.mk