diff --git a/hirosystems/stacks-blockchain-api/Chart.yaml b/hirosystems/stacks-blockchain-api/Chart.yaml
index 4eae003..68a6473 100644
--- a/hirosystems/stacks-blockchain-api/Chart.yaml
+++ b/hirosystems/stacks-blockchain-api/Chart.yaml
@@ -1,7 +1,7 @@
 annotations:
   category: ApplicationServer
 apiVersion: v2
-appVersion: 7.13.2
+appVersion: 8.0.0
 dependencies:
   - condition: stacks-blockchain.enabled
     name: stacks-blockchain
@@ -41,4 +41,4 @@ sources:
   - https://github.com/hirosystems/stacks-blockchain-api
   - https://docs.hiro.so/api
   - https://docs.hiro.so/get-started/stacks-blockchain-api
-version: 5.0.13
+version: 5.1.0
diff --git a/hirosystems/stacks-blockchain-api/templates/api-reader/deployment.yaml b/hirosystems/stacks-blockchain-api/templates/api-reader/deployment.yaml
index 05e3065..033bf70 100644
--- a/hirosystems/stacks-blockchain-api/templates/api-reader/deployment.yaml
+++ b/hirosystems/stacks-blockchain-api/templates/api-reader/deployment.yaml
@@ -101,8 +101,10 @@ spec:
             - name: STACKS_CHAIN_ID
               {{- if eq .Values.blockchainNetwork "mainnet" }}
               value: "0x00000001"
-              {{- else }}
+              {{- else if eq .Values.blockchainNetwork "testnet" }}
               value: "0x80000000"
+              {{- else }}
+              value: {{ default "0x80000000" .Values.blockchainNetwork | quote }}
               {{- end }}
             - name: STACKS_CORE_EVENT_PORT
               value: {{ default "3700" .Values.apiReader.containerPorts.socket | quote }}
diff --git a/hirosystems/stacks-blockchain-api/templates/api-rosetta-reader/deployment.yaml b/hirosystems/stacks-blockchain-api/templates/api-rosetta-reader/deployment.yaml
index b40a598..c786692 100644
--- a/hirosystems/stacks-blockchain-api/templates/api-rosetta-reader/deployment.yaml
+++ b/hirosystems/stacks-blockchain-api/templates/api-rosetta-reader/deployment.yaml
@@ -101,8 +101,10 @@ spec:
             - name: STACKS_CHAIN_ID
               {{- if eq .Values.blockchainNetwork "mainnet" }}
               value: "0x00000001"
-              {{- else }}
+              {{- else if eq .Values.blockchainNetwork "testnet" }}
               value: "0x80000000"
+              {{- else }}
+              value: {{ default "0x80000000" .Values.blockchainNetwork | quote }}
               {{- end }}
             - name: STACKS_CORE_EVENT_PORT
               value: {{ default "3700" .Values.apiRosettaReader.containerPorts.socket | quote }}
diff --git a/hirosystems/stacks-blockchain-api/templates/api-writer/statefulset.yaml b/hirosystems/stacks-blockchain-api/templates/api-writer/statefulset.yaml
index 35c0fd2..f542b3f 100644
--- a/hirosystems/stacks-blockchain-api/templates/api-writer/statefulset.yaml
+++ b/hirosystems/stacks-blockchain-api/templates/api-writer/statefulset.yaml
@@ -245,8 +245,10 @@ spec:
             - name: STACKS_CHAIN_ID
               {{- if eq .Values.blockchainNetwork "mainnet" }}
               value: "0x00000001"
-              {{- else }}
+              {{- else if eq .Values.blockchainNetwork "testnet" }}
               value: "0x80000000"
+              {{- else }}
+              value: {{ default "0x80000000" .Values.blockchainNetwork | quote }}
               {{- end }}
             - name: STACKS_EVENTS_DIR
               value: {{ .Values.apiWriter.persistence.data.mountPath }}/events
diff --git a/hirosystems/stacks-blockchain-api/values.yaml b/hirosystems/stacks-blockchain-api/values.yaml
index 833aa36..d28355b 100644
--- a/hirosystems/stacks-blockchain-api/values.yaml
+++ b/hirosystems/stacks-blockchain-api/values.yaml
@@ -118,7 +118,7 @@ apiWriter:
   image:
     registry: docker.io
     repository: hirosystems/stacks-blockchain-api
-    tag: 7.13.2
+    tag: 8.0.0
     ## Specify a imagePullPolicy
     ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
     ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
@@ -614,7 +614,7 @@ apiReader:
   image:
     registry: docker.io
     repository: hirosystems/stacks-blockchain-api
-    tag: 7.13.2
+    tag: 8.0.0
     ## Specify a imagePullPolicy
     ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
     ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
@@ -973,7 +973,7 @@ apiRosettaReader:
   image:
     registry: docker.io
     repository: hirosystems/stacks-blockchain-api
-    tag: 7.13.2
+    tag: 8.0.0
     ## Specify a imagePullPolicy
     ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
     ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images