diff --git a/Chart.yaml b/Chart.yaml
index dec49b4..a51e8ee 100644
--- a/Chart.yaml
+++ b/Chart.yaml
@@ -1,4 +1,4 @@
 apiVersion: v1
 name: pgdog
-version: v0.28
+version: v0.29
 appVersion: "0.1.21"
diff --git a/README.md b/README.md
index 6e424fb..8d29337 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,11 @@ openMetricsPort: 9090
 
 ### Docker Image
 
-Pin to a specific version for production deployments:
+By default, the chart uses the `appVersion` from `Chart.yaml` as the image
+tag. This ensures the chart deploys a known-compatible version of PgDog
+without requiring explicit configuration.
+
+To override with a specific version:
 
 ```yaml
 image:
@@ -56,6 +60,17 @@ image:
   pullPolicy: IfNotPresent
 ```
 
+To pin to an exact build, use a digest instead of a tag:
+
+```yaml
+image:
+  repository: ghcr.io/pgdogdev/pgdog
+  digest: "sha256:abc123def456..." # Immutable reference
+  pullPolicy: IfNotPresent
+```
+
+When `digest` is specified, it takes precedence over `tag`.
+
 **Legacy format** (still supported for backward compatibility):
 
 ```yaml