diff --git a/ChangeLog.d/extend-pk-opaque-ecc.txt b/ChangeLog.d/extend-pk-opaque-ecc.txt
new file mode 100644
index 000000000..ad5bdc096
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+++ b/ChangeLog.d/extend-pk-opaque-ecc.txt
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+Features
+   * Support for "opaque" (PSA-held) ECC keys in the PK module has been
+     extended: it is now possible to use mbedtls_pk_write_key_der(),
+     mbedtls_pk_write_key_pem(), mbedtls_pk_check_pair(), and
+     mbedtls_pk_verify() with opaque ECC keys (provided the PSA attributes
+     allow it).