diff --git a/charts/blockscout-stack/CHANGELOG.md b/charts/blockscout-stack/CHANGELOG.md
index 44710cb..c848ee9 100644
--- a/charts/blockscout-stack/CHANGELOG.md
+++ b/charts/blockscout-stack/CHANGELOG.md
@@ -1,5 +1,11 @@
 # ChangeLog
 
+## 1.6.6
+
+### Fix
+
+- Replace MODE with APPLICATION_MODE variable.
+
 ## 1.6.5
 
 ### Fix
diff --git a/charts/blockscout-stack/Chart.yaml b/charts/blockscout-stack/Chart.yaml
index 1601de5..de0ca1b 100644
--- a/charts/blockscout-stack/Chart.yaml
+++ b/charts/blockscout-stack/Chart.yaml
@@ -15,7 +15,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 1.6.5
+version: 1.6.6
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
diff --git a/charts/blockscout-stack/templates/blockscout-deployment.yaml b/charts/blockscout-stack/templates/blockscout-deployment.yaml
index 1bd1f59..5d30438 100644
--- a/charts/blockscout-stack/templates/blockscout-deployment.yaml
+++ b/charts/blockscout-stack/templates/blockscout-deployment.yaml
@@ -118,10 +118,10 @@ spec:
               protocol: TCP
           env:
           {{- if .Values.blockscout.separateApi.enabled }}
-          - name: MODE
+          - name: APPLICATION_MODE
             value: "api"
           {{- else }}
-          - name: MODE
+          - name: APPLICATION_MODE
             value: "all"
           {{- end }}
           - name: PORT
@@ -271,7 +271,7 @@ spec:
               containerPort: 4000
               protocol: TCP
           env:
-          - name: MODE
+          - name: APPLICATION_MODE
             value: "indexer"
           - name: PORT
             value: "4000"