diff --git a/infrastructure/kube.yaml b/infrastructure/kube.yaml
index cda1ebe8..f46c1801 100644
--- a/infrastructure/kube.yaml
+++ b/infrastructure/kube.yaml
@@ -25,6 +25,8 @@ spec:
           args:
             - "--name"
             - "$(NAME)@$(POD_IP)"
+            - "--cookie"
+            - "$(SECRET_KEY_BASE)"
             - "-S"
             - "mix"
             - "phx.server"
diff --git a/infrastructure_templates/kube.yaml.dot b/infrastructure_templates/kube.yaml.dot
index 50c256d3..efb2898b 100644
--- a/infrastructure_templates/kube.yaml.dot
+++ b/infrastructure_templates/kube.yaml.dot
@@ -25,6 +25,8 @@ spec:
           args:
             - "--name"
             - "$(NAME)@$(POD_IP)"
+            - "--cookie"
+            - "$(SECRET_KEY_BASE)"
             - "-S"
             - "mix"
             - "phx.server"