diff --git a/Cargo.lock b/Cargo.lock
index 1375ff6..73ff75f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1311,7 +1311,7 @@ checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
 
 [[package]]
 name = "picloud"
-version = "0.5.1"
+version = "0.6.0"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1335,7 +1335,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-executor"
-version = "0.5.1"
+version = "0.6.0"
 dependencies = [
  "anyhow",
  "picloud-executor-core",
@@ -1347,7 +1347,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-executor-core"
-version = "0.5.1"
+version = "0.6.0"
 dependencies = [
  "chrono",
  "picloud-shared",
@@ -1361,7 +1361,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-manager"
-version = "0.5.1"
+version = "0.6.0"
 dependencies = [
  "anyhow",
  "picloud-manager-core",
@@ -1373,7 +1373,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-manager-core"
-version = "0.5.1"
+version = "0.6.0"
 dependencies = [
  "argon2",
  "async-trait",
@@ -1397,7 +1397,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-orchestrator"
-version = "0.5.1"
+version = "0.6.0"
 dependencies = [
  "anyhow",
  "picloud-orchestrator-core",
@@ -1409,7 +1409,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-orchestrator-core"
-version = "0.5.1"
+version = "0.6.0"
 dependencies = [
  "async-trait",
  "axum",
@@ -1428,7 +1428,7 @@ dependencies = [
 
 [[package]]
 name = "picloud-shared"
-version = "0.5.1"
+version = "0.6.0"
 dependencies = [
  "async-trait",
  "chrono",
diff --git a/Cargo.toml b/Cargo.toml
index 7952bb0..d02b263 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.5.1"
+version = "0.6.0"
 edition = "2021"
 rust-version = "1.92"
 license = "MIT OR Apache-2.0"
diff --git a/crates/picloud/src/main.rs b/crates/picloud/src/main.rs
index 64fa70f..8e675af 100644
--- a/crates/picloud/src/main.rs
+++ b/crates/picloud/src/main.rs
@@ -45,6 +45,7 @@ async fn run_server() -> anyhow::Result<()> {
 
     let auth = AuthDeps::from_pool(pool.clone());
     bootstrap_first_admin(&*auth.users).await?;
+    warn_on_multi_owner_install(&*auth.users).await;
 
     // Seed Hello World into the default app when this is a fresh
     // install (no scripts and no routes). Idempotent on upgrades.
@@ -79,6 +80,31 @@ async fn run_server() -> anyhow::Result<()> {
     Ok(())
 }
 
+/// Multi-owner startup warning — Phase 3.5 migration upgraded every
+/// pre-existing admin_users row to `Owner` via DEFAULT, which for
+/// installs with several Phase 3a admins means several co-owners.
+/// Surface this once at boot so the operator can demote extras via
+/// `PATCH /api/v1/admin/admins/{id}` with `instance_role: "admin"`.
+/// Soft-fail: a DB blip should not block startup.
+async fn warn_on_multi_owner_install(users: &dyn AdminUserRepository) {
+    match users.list_active_owners().await {
+        Ok(owners) if owners.len() > 1 => {
+            let names: Vec<String> = owners.into_iter().map(|u| u.username).collect();
+            tracing::warn!(
+                count = names.len(),
+                owners = ?names,
+                "multiple active owners detected — Phase 3.5 promoted every \
+                 pre-existing admin to owner. Demote extras via \
+                 PATCH /api/v1/admin/admins/{{id}} with instance_role."
+            );
+        }
+        Ok(_) => {}
+        Err(err) => {
+            tracing::warn!(?err, "could not count active owners for multi-owner startup check");
+        }
+    }
+}
+
 fn spawn_session_pruner(sessions: Arc<dyn AdminSessionRepository>) {
     tokio::spawn(async move {
         let mut ticker = tokio::time::interval(Duration::from_secs(600));
diff --git a/crates/picloud/tests/api.rs b/crates/picloud/tests/api.rs
index cb4b75a..d183dbe 100644
--- a/crates/picloud/tests/api.rs
+++ b/crates/picloud/tests/api.rs
@@ -822,7 +822,7 @@ async fn version_includes_public_base_url(pool: PgPool) {
     let v: Value = r.json();
     assert!(v["public_base_url"].is_string());
     assert_eq!(v["api"], 1);
-    assert_eq!(v["schema"], 5);
+    assert_eq!(v["schema"], 6);
     assert_eq!(v["sdk"], "1.1");
 }
 
diff --git a/dashboard/package-lock.json b/dashboard/package-lock.json
index c77c214..7f738a4 100644
--- a/dashboard/package-lock.json
+++ b/dashboard/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "picloud-dashboard",
-  "version": "0.5.1",
+  "version": "0.6.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "picloud-dashboard",
-      "version": "0.5.1",
+      "version": "0.6.0",
       "dependencies": {
         "@codemirror/autocomplete": "^6.20.2",
         "@codemirror/commands": "^6.10.3",
diff --git a/dashboard/package.json b/dashboard/package.json
index 92ac4c5..4b0b515 100644
--- a/dashboard/package.json
+++ b/dashboard/package.json
@@ -1,6 +1,6 @@
 {
   "name": "picloud-dashboard",
-  "version": "0.5.1",
+  "version": "0.6.0",
   "private": true,
   "type": "module",
   "scripts": {
diff --git a/docs/versioning.md b/docs/versioning.md
index 94d2607..5efba07 100644
--- a/docs/versioning.md
+++ b/docs/versioning.md
@@ -126,10 +126,10 @@ A surface can hit its own `1.0` independently of the product. The SDK in particu
 
 | | Version |
 |---|---|
-| Product | `0.5.1` |
+| Product | `0.6.0` |
 | SDK | `1.1` (adds `ctx.request.params`, `ctx.request.query`, `ctx.request.rest`) |
-| API | `1` (additive: `Script.app_id`, `Route.app_id`, `ExecutionLog.app_id`, new `/api/v1/admin/apps/*` endpoints, `?app=` filter on script list) |
-| Schema | `5` (matches `migrations/0005_apps.sql`) |
+| API | `1` (additive: `Script.app_id`, `Route.app_id`, `ExecutionLog.app_id`, new `/api/v1/admin/apps/*` and `/api/v1/admin/api-keys/*` endpoints, `?app=` filter on script list, `Authorization: Bearer pic_…` credential type, 403 responses on previously-401-only admin endpoints when the caller lacks the required capability) |
+| Schema | `6` (matches `migrations/0006_users_authz.sql`) |
 | Wire | `1` (reserved; cluster mode not implemented) |
 
 Read live from `GET /version` on any running instance.