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 69b3a7ff2aa..8a12deed4f9 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
@@ -77,6 +77,7 @@ public enum VersionEnum {
 	V5_5_0,
 	V5_5_1,
 	V5_5_2,
+	V5_5_3,
 	V5_6_0
 
 	;
diff --git a/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_5_3/version.yaml b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_5_3/version.yaml
new file mode 100644
index 00000000000..8c1df4cde42
--- /dev/null
+++ b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_5_3/version.yaml
@@ -0,0 +1,3 @@
+---
+release-date: "2021-10-29"
+codename: "Quasar"
diff --git a/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3088-chained-search-contained-reference.yaml b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3088-chained-search-contained-reference.yaml
index f38d85e6bc3..99f594e0225 100644
--- a/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3088-chained-search-contained-reference.yaml
+++ b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3088-chained-search-contained-reference.yaml
@@ -1,6 +1,7 @@
 ---
 type: add
 issue: 3088
+backport: 5.5.3
 jira: SMILE-3151
 title: "Previously, chained searches were not able to traverse reference fields within contained resources.
 This enhancement adds the ability to traverse the reference fields of contained resources when those fields refer to discrete resources."
diff --git a/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3100-chained-search-multi-contained-resource.yaml b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3100-chained-search-multi-contained-resource.yaml
index a03068d48f5..9e069eef406 100644
--- a/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3100-chained-search-multi-contained-resource.yaml
+++ b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3100-chained-search-multi-contained-resource.yaml
@@ -1,6 +1,7 @@
 ---
 type: add
 issue: 3100
+backport: 5.5.3
 jira: SMILE-3151
 title: "Previously, only contained resources that are referenced directly by the containing resource were being indexed.
 This enhancement indexes the fields of contained resources that are referenced by other contained resources and
diff --git a/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3106-chained-search-multi-contained-resource-to-outbound-ref.yaml b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3106-chained-search-multi-contained-resource-to-outbound-ref.yaml
index 73f75c3ef22..414f4441fe0 100644
--- a/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3106-chained-search-multi-contained-resource-to-outbound-ref.yaml
+++ b/hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3106-chained-search-multi-contained-resource-to-outbound-ref.yaml
@@ -1,5 +1,6 @@
 ---
 type: add
 issue: 3106
+backport: 5.5.3
 jira: SMILE-3151
 title: "Further enhances the features added by issue 3100 to allow chained searches across any combination of discrete and contained references."