diff --git a/ChangeLog.d/x509-add-ca_istrue.txt b/ChangeLog.d/x509-add-ca_istrue.txt
new file mode 100644
index 0000000000..4594c2296b
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+++ b/ChangeLog.d/x509-add-ca_istrue.txt
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+Features
+   * Add new accessor to expose the `MBEDTLS_PRIVATE(ca_istrue)` member of
+     `mbedtls_x509_crt` structure. This requires setting
+     MBEDTLS_X509_EXT_BASIC_CONSTRAINTS.