diff --git a/ports/mbedtls/CONTROL b/ports/mbedtls/CONTROL
index c4bed6fa687..ae9d78cc962 100644
--- a/ports/mbedtls/CONTROL
+++ b/ports/mbedtls/CONTROL
@@ -1,3 +1,3 @@
 Source: mbedtls
-Version: 2.6.1
+Version: 2.12.0
 Description: An open source, portable, easy to use, readable and flexible SSL library
diff --git a/ports/mbedtls/portfile.cmake b/ports/mbedtls/portfile.cmake
index 600b2790cb4..495dfb53c00 100644
--- a/ports/mbedtls/portfile.cmake
+++ b/ports/mbedtls/portfile.cmake
@@ -5,8 +5,8 @@ set(VCPKG_LIBRARY_LINKAGE static)
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO ARMmbed/mbedtls
-    REF mbedtls-2.6.1
-    SHA512 06f8ba2a453164bac01d20ca6f5c80e691857977ef501d56685e81a0e90dddae1bedeab46c18c22f9a3b72894d45d7466f76a5c404417b6613ddae0ee4a881c8
+    REF mbedtls-2.12.0
+    SHA512 c7c2aeb1717886ad87486af2dccb05b2f051372c69fc914f30e4ace1067f5be39ba04e093ad522f904e23a576c1ff430bd772e77823d0f4720f6fc5c1b8aa98c
     HEAD_REF master
 )