diff --git a/CHANGES.md b/CHANGES.md
index 305296ac3e..cc6baa6934 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -37,6 +37,11 @@ OpenSSL 3.4
 
 ### Changes between 3.3 and 3.4 [xx XXX xxxx]
 
+ * For the FIPS provider only, replaced the primary DRBG with a continuous
+   health check module.  This also removes the now forbidden DRBG chaining.
+
+   *Paul Dale*
+
  * Improved base64 BIO correctness and error reporting.
 
    *Viktor Dukhovni*