diff --git a/charts/spire/charts/spike-keeper/Chart.yaml b/charts/spire/charts/spike-keeper/Chart.yaml
index 9cb2683..7a31ec8 100644
--- a/charts/spire/charts/spike-keeper/Chart.yaml
+++ b/charts/spire/charts/spike-keeper/Chart.yaml
@@ -3,7 +3,7 @@ name: spike-keeper
 description: A Helm chart to deploy SPIKE Keeper
 type: application
 version: 0.1.0
-appVersion: "0.4.1"
+appVersion: "0.4.2"
 home: https://github.com/spiffe/helm-charts-hardened/tree/main/charts/spire
 sources:
   - https://github.com/spiffe/spike
diff --git a/charts/spire/charts/spike-nexus/Chart.yaml b/charts/spire/charts/spike-nexus/Chart.yaml
index c125986..05fd4e1 100644
--- a/charts/spire/charts/spike-nexus/Chart.yaml
+++ b/charts/spire/charts/spike-nexus/Chart.yaml
@@ -3,7 +3,7 @@ name: spike-nexus
 description: A Helm chart to deploy SPIKE Nexus
 type: application
 version: 0.1.0
-appVersion: "0.4.1"
+appVersion: "0.4.2"
 home: https://github.com/spiffe/helm-charts-hardened/tree/main/charts/spire
 sources:
   - https://github.com/spiffe/spike
diff --git a/charts/spire/charts/spike-nexus/README.md b/charts/spire/charts/spike-nexus/README.md
index 9d20a00..d7140a1 100644
--- a/charts/spire/charts/spike-nexus/README.md
+++ b/charts/spire/charts/spike-nexus/README.md
@@ -34,6 +34,7 @@ A Helm chart to deploy spike nexus
 | `image.repository`                 | The repository within the registry                                                                                                                                                                                                      | `spiffe/spike-nexus` |
 | `image.pullPolicy`                 | The image pull policy                                                                                                                                                                                                                   | `IfNotPresent`       |
 | `image.tag`                        | Overrides the image tag whose default is the chart appVersion                                                                                                                                                                           | `""`                 |
+| `backendStore`                     | The backend store to use. Must be one of [sqlite, memory, lite]                                                                                                                                                                         | `sqlite`             |
 | `replicas`                         | The number of keepers to launch                                                                                                                                                                                                         | `1`                  |
 | `shamir.shares`                    | How many shares to configure for shamir secrets                                                                                                                                                                                         | `3`                  |
 | `shamir.threshold`                 | How many shares needed to recover                                                                                                                                                                                                       | `2`                  |
diff --git a/charts/spire/charts/spike-nexus/templates/statefulset.yaml b/charts/spire/charts/spike-nexus/templates/statefulset.yaml
index 1dfeb6b..3038ba7 100644
--- a/charts/spire/charts/spike-nexus/templates/statefulset.yaml
+++ b/charts/spire/charts/spike-nexus/templates/statefulset.yaml
@@ -36,6 +36,8 @@ spec:
               containerPort: 8443
               protocol: TCP
           env:
+            - name: SPIKE_NEXUS_BACKEND_STORE
+              value: {{ .Values.backendStore | quote }}
             - name: SPIKE_NEXUS_SHAMIR_SHARES
               value: {{ .Values.shamir.shares | quote }}
             - name: SPIKE_NEXUS_SHAMIR_THRESHOLD
diff --git a/charts/spire/charts/spike-nexus/values.yaml b/charts/spire/charts/spike-nexus/values.yaml
index 4d51f78..98555b2 100644
--- a/charts/spire/charts/spike-nexus/values.yaml
+++ b/charts/spire/charts/spike-nexus/values.yaml
@@ -17,6 +17,9 @@ image:
   pullPolicy: IfNotPresent
   tag: ""
 
+## @param backendStore The backend store to use. Must be one of [sqlite, memory, lite]
+backendStore: sqlite
+
 ## @param replicas The number of keepers to launch
 replicas: 1
 
diff --git a/charts/spire/charts/spike-pilot/Chart.yaml b/charts/spire/charts/spike-pilot/Chart.yaml
index 34c265a..122192d 100644
--- a/charts/spire/charts/spike-pilot/Chart.yaml
+++ b/charts/spire/charts/spike-pilot/Chart.yaml
@@ -3,7 +3,7 @@ name: spike-pilot
 description: A Helm chart to deploy SPIKE Pilot
 type: application
 version: 0.1.0
-appVersion: "0.4.1"
+appVersion: "0.4.2"
 home: https://github.com/spiffe/helm-charts-hardened/tree/main/charts/spire
 sources:
   - https://github.com/spiffe/spike