diff --git a/extmod/extmod.cmake b/extmod/extmod.cmake
index 154931a664..532ce83f90 100644
--- a/extmod/extmod.cmake
+++ b/extmod/extmod.cmake
@@ -219,6 +219,7 @@ if(MICROPY_SSL_MBEDTLS)
         ${MICROPY_LIB_MBEDTLS_DIR}/library/pkcs12.c
         ${MICROPY_LIB_MBEDTLS_DIR}/library/pkcs5.c
         ${MICROPY_LIB_MBEDTLS_DIR}/library/pkparse.c
+        ${MICROPY_LIB_MBEDTLS_DIR}/library/pk_ecc.c
         ${MICROPY_LIB_MBEDTLS_DIR}/library/pk_wrap.c
         ${MICROPY_LIB_MBEDTLS_DIR}/library/pkwrite.c
         ${MICROPY_LIB_MBEDTLS_DIR}/library/platform.c
diff --git a/extmod/extmod.mk b/extmod/extmod.mk
index c8bc74d268..6d54ae2222 100644
--- a/extmod/extmod.mk
+++ b/extmod/extmod.mk
@@ -294,6 +294,7 @@ SRC_THIRDPARTY_C += $(addprefix $(MBEDTLS_DIR)/library/,\
 	pkcs12.c \
 	pkcs5.c \
 	pkparse.c \
+	pk_ecc.c \
 	pk_wrap.c \
 	pkwrite.c \
 	platform.c \
diff --git a/extmod/mbedtls/mbedtls_config_common.h b/extmod/mbedtls/mbedtls_config_common.h
index 4028bdf56d..6ea8540af9 100644
--- a/extmod/mbedtls/mbedtls_config_common.h
+++ b/extmod/mbedtls/mbedtls_config_common.h
@@ -79,6 +79,7 @@
 #define MBEDTLS_OID_C
 #define MBEDTLS_PKCS5_C
 #define MBEDTLS_PK_C
+#define MBEDTLS_PK_HAVE_ECC_KEYS
 #define MBEDTLS_PK_PARSE_C
 #define MBEDTLS_PLATFORM_C
 #define MBEDTLS_RSA_C
diff --git a/lib/mbedtls b/lib/mbedtls
index edb8fec988..107ea89daa 160000
--- a/lib/mbedtls
+++ b/lib/mbedtls
@@ -1 +1 @@
-Subproject commit edb8fec9882084344a314368ac7fd957a187519c
+Subproject commit 107ea89daaefb9867ea9121002fbbdf926780e98