diff --git a/templates/deployment-sidekiq.yaml b/templates/deployment-sidekiq.yaml
index 8cae4f3..09ed53d 100644
--- a/templates/deployment-sidekiq.yaml
+++ b/templates/deployment-sidekiq.yaml
@@ -44,6 +44,10 @@ spec:
         app.kubernetes.io/component: sidekiq-{{ .name }}
         app.kubernetes.io/part-of: rails
     spec:
+      {{- with $context.Values.hostAliases }}
+      hostAliases:
+      {{- toYaml . | nindent 8 }}
+      {{- end }}
       {{- with $context.Values.imagePullSecrets }}
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
diff --git a/templates/deployment-streaming.yaml b/templates/deployment-streaming.yaml
index 1e4acaa..cdb3795 100644
--- a/templates/deployment-streaming.yaml
+++ b/templates/deployment-streaming.yaml
@@ -28,6 +28,10 @@ spec:
         {{- include "mastodon.selectorLabels" . | nindent 8 }}
         app.kubernetes.io/component: streaming
     spec:
+      {{- with .Values.hostAliases }}
+      hostAliases:
+      {{- toYaml . | nindent 8 }}
+      {{- end }}
       {{- with .Values.imagePullSecrets }}
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
diff --git a/templates/deployment-web.yaml b/templates/deployment-web.yaml
index 47aa0f6..521d158 100644
--- a/templates/deployment-web.yaml
+++ b/templates/deployment-web.yaml
@@ -31,6 +31,10 @@ spec:
         app.kubernetes.io/component: web
         app.kubernetes.io/part-of: rails
     spec:
+      {{- with .Values.hostAliases }}
+      hostAliases:
+      {{- toYaml . | nindent 8 }}
+      {{- end }}
       {{- with .Values.imagePullSecrets }}
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
diff --git a/values.yaml b/values.yaml
index 237ace5..f61fced 100644
--- a/values.yaml
+++ b/values.yaml
@@ -562,6 +562,10 @@ tolerations: []
 # -- Affinity for all pods unless overwritten
 affinity: {}
 
+# Any aliases to add to pod's /etc/hosts file.
+# https://kubernetes.io/docs/concepts/services-networking/add-entries-to-pod-etc-hosts-with-host-aliases/
+hostAliases: []
+
 # -- Topology Spread Constraints for all pods unless overwritten
 # Please note that you need to use `matchLabelKeys` (Kubernetes 1.25+) if you
 # want to spread each deployment independently, or override topologySpreadConstraints