diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index 92e1b62aa..0d10ea644 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -3535,6 +3535,17 @@
  */
 //#define MBEDTLS_PLATFORM_GMTIME_R_ALT
 
+/*
+ * \def MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED
+ *
+ * Enable the verified implementations of crypto primitives
+ * from Project Everest (currently only Curve25519).
+ * This feature breaks ECDH backward compatibility (see also
+ * MBEDTLS_ECDH_LEGACY_CONTEXT).
+ *
+ */
+#define MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED
+
 /* \} name SECTION: Customisation configuration options */
 
 /* Target and application specific configurations