diff --git a/packages/stack/src/runtime/ContainerName.ts b/packages/stack/src/runtime/ContainerName.ts
index 13c845ef42..a506ac8a27 100644
--- a/packages/stack/src/runtime/ContainerName.ts
+++ b/packages/stack/src/runtime/ContainerName.ts
@@ -15,6 +15,14 @@ const composeSegment = (value: string): string =>
     .replaceAll(/[^a-z0-9_-]+/gu, "-")
     .slice(0, 40);
 
+/** Groups a stack's containers, helpers included, as one compose project. */
+export const composeProjectFor = (stackId: string, project: string | undefined): string =>
+  [
+    "supabase",
+    project === undefined ? "stack" : composeSegment(project) || "stack",
+    stackId.slice(0, 12).toLowerCase(),
+  ].join("-");
+
 /** Names a container and sets compose grouping labels; one-shots get a `-task` segment. */
 export const identifyContainer = (spec: ContainerIdentityInput, token: string, oneOff: boolean) => {
   const project = spec.project === undefined ? undefined : nameSegment(spec.project);
@@ -28,10 +36,9 @@ export const identifyContainer = (spec: ContainerIdentityInput, token: string, o
   ]
     .filter((segment): segment is string => segment !== undefined && segment.length > 0)
     .join("-");
-  const composeProject = [
-    "supabase",
-    spec.project === undefined ? "stack" : composeSegment(spec.project) || "stack",
-    spec.stackId.slice(0, 12).toLowerCase(),
-  ].join("-");
-  return { name, composeProject, composeService: service ?? "task" };
+  return {
+    name,
+    composeProject: composeProjectFor(spec.stackId, spec.project),
+    composeService: service ?? "task",
+  };
 };
diff --git a/packages/stack/src/services/Database.integration.test.ts b/packages/stack/src/services/Database.integration.test.ts
index 3b2cc63541..08afa7397d 100644
--- a/packages/stack/src/services/Database.integration.test.ts
+++ b/packages/stack/src/services/Database.integration.test.ts
@@ -460,6 +460,49 @@ describe("database component", { timeout: 180_000 }, () => {
       ).pipe(Effect.provide(Layer.merge(NodeServices.layer, NodeHttpClient.layerNodeHttp))),
     );
 
+  it.live("groups the database and its storage helper under one compose project", () =>
+    Effect.scoped(
+      Effect.gen(function* () {
+        const path = yield* Path.Path;
+        const stackId = "stack-compose-group";
+        const root = yield* makeDockerDatabaseRoot("stack-database-group-", stackId);
+        const database = yield* makeDatabase({
+          stackId,
+          instanceId: "database",
+          project: "my.app",
+          root,
+          cacheRoot: artifactCacheRoot,
+          runtime: "docker",
+        });
+        const service = yield* makeService(database.definition, {
+          id: "database:group",
+          config,
+        });
+        yield* service.start;
+        yield* service.ready;
+        const listed = yield* runDocker([
+          "ps",
+          "--filter",
+          `label=com.supabase.stack-root=${path.resolve(root)}`,
+          "--format",
+          '{{.Names}}|{{.Label "com.docker.compose.project"}}|{{.Label "com.docker.compose.service"}}',
+        ]);
+        const rows = listed.output
+          .split("\n")
+          .filter((line) => line.trim().length > 0)
+          .map((line) => line.trim().split("|"));
+        expect(rows.some(([name]) => name?.startsWith("supabase-db-helper-"))).toBe(true);
+        expect(new Set(rows.map(([, project]) => project))).toEqual(
+          new Set(["supabase-my-app-stack-compos"]),
+        );
+        expect(new Set(rows.map(([, , group]) => group))).toEqual(
+          new Set(["database", "database-helper"]),
+        );
+        yield* service.destroy;
+      }),
+    ).pipe(Effect.provide(Layer.merge(NodeServices.layer, NodeHttpClient.layerNodeHttp))),
+  );
+
   it.live("shuts PostgreSQL down fast while a client stays connected across stop", () =>
     Effect.scoped(
       Effect.gen(function* () {
diff --git a/packages/stack/src/services/Database.ts b/packages/stack/src/services/Database.ts
index 4f4b52017c..943cd9958e 100644
--- a/packages/stack/src/services/Database.ts
+++ b/packages/stack/src/services/Database.ts
@@ -521,6 +521,7 @@ export const makeDatabase = (
             runtime: options.runtime,
             stackId: String(options.stackId),
             instanceId: options.instanceId,
+            ...(options.project === undefined ? {} : { project: options.project }),
             instanceRoot,
             root: options.root,
             cacheRoot: options.cacheRoot,
diff --git a/packages/stack/src/storage/DockerDatabaseStorage.ts b/packages/stack/src/storage/DockerDatabaseStorage.ts
index 26c80142b1..5bf4fcec34 100644
--- a/packages/stack/src/storage/DockerDatabaseStorage.ts
+++ b/packages/stack/src/storage/DockerDatabaseStorage.ts
@@ -16,6 +16,7 @@ import type { ChildProcessSpawner as ChildProcessSpawnerService } from "effect/u
 import { postgresVersion, resolveArtifact } from "../Artifacts.ts";
 import { failureMessage } from "../internal/failure-message.ts";
 import type { ContainerRuntime } from "../runtime/Container.ts";
+import { composeProjectFor } from "../runtime/ContainerName.ts";
 import type { DatabaseRuntime } from "../services/Database.ts";
 import {
   DatabaseSnapshotError,
@@ -116,6 +117,7 @@ export const makeDockerDatabaseStorage = Effect.fn("DockerDatabaseStorage.make")
     readonly runtime: DatabaseRuntime;
     readonly stackId: string;
     readonly instanceId: string;
+    readonly project?: string;
     readonly instanceRoot: string;
     readonly root: string;
     readonly cacheRoot: string;
@@ -128,6 +130,12 @@ export const makeDockerDatabaseStorage = Effect.fn("DockerDatabaseStorage.make")
   }): Effect.Effect<DockerDatabaseStorage, DockerDatabaseStorageError, Scope.Scope> =>
     Effect.gen(function* () {
       const markerPath = options.path.join(options.instanceRoot, ".supabase-database-storage.json");
+      const composeHelperLabels = [
+        "--label",
+        `com.docker.compose.project=${composeProjectFor(options.stackId, options.project)}`,
+        "--label",
+        "com.docker.compose.service=database-helper",
+      ];
       const stateRoot = options.path.dirname(options.path.dirname(options.root));
       const dataNamespace = `instance-${options.stackId}-${options.instanceId}`;
       const hash = (value: string) =>
@@ -588,6 +596,7 @@ export const makeDockerDatabaseStorage = Effect.fn("DockerDatabaseStorage.make")
                 `com.supabase.instance=${options.instanceId}`,
                 "--label",
                 `com.supabase.stack-root=${options.path.resolve(options.root)}`,
+                ...composeHelperLabels,
                 ...mountArgs(mounts),
                 preparedImage,
                 "/bin/sh",
@@ -677,6 +686,7 @@ export const makeDockerDatabaseStorage = Effect.fn("DockerDatabaseStorage.make")
               `com.supabase.stack=${options.stackId}`,
               "--label",
               `com.supabase.stack-root=${options.path.resolve(options.root)}`,
+              ...composeHelperLabels,
               ...mountArgs(mounts),
               preparedImage,
               "/bin/sh",