diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3201d23bdf..5c070415e5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 * Prevent duplicate processing: after a medication request is processed, the system no longer pulls a subsequent non‑consultation item based on the same request.
+* When DiagnosticReport doesn't contain a Specimen or Observation reference, instead of "DUMMY" "NOT-PRESENT" value is used
 
 ### Added
 * The GP2GP Adaptor now validates references inside condition objects to test whether they actually exist. Otherwise, the bundle is rejected.
@@ -18,9 +19,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * The GP2GP Adaptor now throws an exception when the Access Structure Record is empty, thereby rejecting the transfer
 * The GP2GP Adaptor now throws an exception when the XML is not valid, thereby stopping the transfer from going forward
 
-### Fixed
-* When DiagnosticReport doesn't contain a Specimen or Observation reference, instead of "DUMMY" "NOT-PRESENT" value is used
-
 ### Update
 
 * [GP Connect 1.6.1] The GP2GP Adaptor is now able to identify e-referrals by using either `https://fhir.nhs.uk/Id/ubr-number` or `https://fhir.nhs.uk/Id/UBRN` when provided as an identifier system URL.
diff --git a/OPERATING.md b/OPERATING.md
index ff79d51ef0..e104ffdd36 100644
--- a/OPERATING.md
+++ b/OPERATING.md
@@ -28,7 +28,7 @@ You can provide an external `logback.xml` file using the `-Dlogback.configuratio
 
 ### Database Configuration Options
 
-The adaptor requires a Mongodb-compatible database of at least version 4.0 to manage its internal state.
+The adaptor requires a Mongodb-compatible database of at least version 5.0 to manage its internal state.
 MongoDB provides [a table of compatible versions of their product against the java driver version][mongodb-compatible-versions].
 
 [mongodb-compatible-versions]: https://www.mongodb.com/docs/drivers/java/sync/current/compatibility/#compatibility-table-legend