diff --git a/hapi-fhir-base/src/main/java/ca/uhn/fhir/util/VersionEnum.java b/hapi-fhir-base/src/main/java/ca/uhn/fhir/util/VersionEnum.java
index bfb3f27dac8..e6871e7480b 100644
--- a/hapi-fhir-base/src/main/java/ca/uhn/fhir/util/VersionEnum.java
+++ b/hapi-fhir-base/src/main/java/ca/uhn/fhir/util/VersionEnum.java
@@ -86,6 +86,7 @@ public enum VersionEnum {
 	V5_6_1,
 	V5_6_2,
 	V5_6_3,
+	V5_6_4,
 	V5_7_0,
 	V5_7_1,
 	V5_7_2,
diff --git a/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_4/version.yaml b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_4/version.yaml
new file mode 100644
index 00000000000..2c45b904595
--- /dev/null
+++ b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_4/version.yaml
@@ -0,0 +1,3 @@
+---
+release-date: "2022-07-07"
+codename: "Raccoon"
diff --git a/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/6_0_0/3256-avoid-concurrency-failure.yaml b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/6_0_0/3256-avoid-concurrency-failure.yaml
index 86e26dba850..0d9a9b78dac 100644
--- a/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/6_0_0/3256-avoid-concurrency-failure.yaml
+++ b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/6_0_0/3256-avoid-concurrency-failure.yaml
@@ -1,5 +1,6 @@
 ---
 type: fix
 issue: 3256
+backport: 5.6.4
 title: "An occasional concurrency failure in AuthorizationInterceptor has been resolved. Thanks to 
   Martin Visser for reporting and providing a reproducible test case!"