diff --git a/pkg/comp-functions/functions/vshnkeycloak/deploy.go b/pkg/comp-functions/functions/vshnkeycloak/deploy.go
index efdbeae1b..8d863a046 100644
--- a/pkg/comp-functions/functions/vshnkeycloak/deploy.go
+++ b/pkg/comp-functions/functions/vshnkeycloak/deploy.go
@@ -152,7 +152,6 @@ func addPostgreSQL(svc *runtime.ServiceRuntime, comp *vshnv1.VSHNKeycloak) error
 
 	params := &vshnv1.VSHNPostgreSQLParameters{
 		Size:        comp.Spec.Parameters.Size,
-		Instances:   1,
 		Maintenance: comp.GetFullMaintenanceSchedule(),
 		Backup: vshnv1.VSHNPostgreSQLBackup{
 			Retention:          retention,
@@ -183,6 +182,9 @@ func addPostgreSQL(svc *runtime.ServiceRuntime, comp *vshnv1.VSHNKeycloak) error
 			params.Backup.DeletionProtection = comp.Spec.Parameters.Service.PostgreSQLParameters.Backup.DeletionProtection
 		}
 	}
+	// We need to set this after the merge, as the default instance count for PostgreSQL is always 1
+	// and would therefore override any value we set before the merge.
+	params.Instances = comp.Spec.Parameters.Instances
 
 	pg := &vshnv1.XVSHNPostgreSQL{
 		ObjectMeta: metav1.ObjectMeta{
@@ -371,6 +373,7 @@ func newValues(ctx context.Context, svc *runtime.ServiceRuntime, comp *vshnv1.VS
 	}
 
 	values = map[string]any{
+		"replicas":          comp.Spec.Parameters.Instances,
 		"extraEnv":          extraEnv,
 		"extraVolumes":      extraVolumes,
 		"extraVolumeMounts": extraVolumeMounts,
diff --git a/pkg/comp-functions/functions/vshnkeycloak/deploy_test.go b/pkg/comp-functions/functions/vshnkeycloak/deploy_test.go
index 05b31edfb..e100ef479 100644
--- a/pkg/comp-functions/functions/vshnkeycloak/deploy_test.go
+++ b/pkg/comp-functions/functions/vshnkeycloak/deploy_test.go
@@ -2,6 +2,7 @@ package vshnkeycloak
 
 import (
 	"context"
+	"encoding/json"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -26,7 +27,6 @@ func Test_addPostgreSQL(t *testing.T) {
 
 	// Assert default values
 	assert.True(t, *pg.Spec.Parameters.Backup.DeletionProtection)
-	assert.Equal(t, 1, pg.Spec.Parameters.Instances)
 	assert.Equal(t, 6, pg.Spec.Parameters.Backup.Retention)
 
 	// Assert default overrides
@@ -35,13 +35,11 @@ func Test_addPostgreSQL(t *testing.T) {
 			DeletionProtection: ptr.To(false),
 			Retention:          1,
 		},
-		Instances: 2,
 	}
 
 	assert.NoError(t, addPostgreSQL(svc, comp))
 	assert.NoError(t, svc.GetDesiredComposedResourceByName(pg, comp.GetName()+pgInstanceNameSuffix))
 	assert.False(t, *pg.Spec.Parameters.Backup.DeletionProtection)
-	assert.Equal(t, 2, pg.Spec.Parameters.Instances)
 	assert.Equal(t, 1, pg.Spec.Parameters.Backup.Retention)
 }
 
@@ -69,3 +67,36 @@ func Test_addRelease(t *testing.T) {
 	assert.NoError(t, svc.GetDesiredComposedResourceByName(release, comp.GetName()+"-release"))
 
 }
+
+func Test_addHARelease(t *testing.T) {
+	svc := commontest.LoadRuntimeFromFile(t, "vshnkeycloak/01_default.yaml")
+
+	comp := &vshnv1.VSHNKeycloak{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      "mycloak",
+			Namespace: "default",
+		},
+		Spec: vshnv1.VSHNKeycloakSpec{
+			Parameters: vshnv1.VSHNKeycloakParameters{
+				Instances: 2,
+				Service: vshnv1.VSHNKeycloakServiceSpec{
+					Version: "23",
+				},
+			},
+		},
+	}
+
+	assert.NoError(t, addRelease(context.TODO(), svc, comp, "mysecret"))
+	release := &xhelmv1.Release{}
+	assert.NoError(t, svc.GetDesiredComposedResourceByName(release, comp.GetName()+"-release"))
+	values := map[string]any{}
+	assert.NoError(t, json.Unmarshal(release.Spec.ForProvider.Values.Raw, &values))
+	assert.Equal(t, float64(2), values["replicas"])
+
+	pg := &vshnv1.XVSHNPostgreSQL{}
+
+	assert.NoError(t, addPostgreSQL(svc, comp))
+	assert.NoError(t, svc.GetDesiredComposedResourceByName(pg, comp.GetName()+pgInstanceNameSuffix))
+	assert.Equal(t, 2, pg.Spec.Parameters.Instances)
+
+}