diff --git a/package-lock.json b/package-lock.json
index 50b89b8..02df59f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,7 @@
     "": {
       "name": "synapse-startos",
       "dependencies": {
-        "@start9labs/start-sdk": "1.5.2"
+        "@start9labs/start-sdk": "1.5.3"
       },
       "devDependencies": {
         "@types/node": "^22.19.0",
@@ -61,9 +61,9 @@
       "license": "MIT"
     },
     "node_modules/@start9labs/start-sdk": {
-      "version": "1.5.2",
-      "resolved": "https://registry.npmjs.org/@start9labs/start-sdk/-/start-sdk-1.5.2.tgz",
-      "integrity": "sha512-3L4OKuH9kUtuH6G20BSPk85yN/jS3+0WNkP19ahwO9Nc7L6STel4hujvKii3osf0p0tU2q5Mk2Y8b9f2dVR1ng==",
+      "version": "1.5.3",
+      "resolved": "https://registry.npmjs.org/@start9labs/start-sdk/-/start-sdk-1.5.3.tgz",
+      "integrity": "sha512-OyHe9J6hMvyA5ZavcLkxdVQvZcuTH9J9kagV6NDI83eAG/YpJFIq62gP/n/2PPNdHWwNSXVQmSwnsvsV8Gyg+A==",
       "license": "MIT",
       "dependencies": {
         "@iarna/toml": "^3.0.0",
@@ -342,7 +342,6 @@
       "resolved": "https://registry.npmjs.org/zod/-/zod-4.3.6.tgz",
       "integrity": "sha512-rftlrkhHZOcjDwkGlnUtZZkvaPHCsDATp4pGpuOOMDaTdDDXF91wuVDJoWoPsKX/3YPQ5fHuF3STjcYyKr+Qhg==",
       "license": "MIT",
-      "peer": true,
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }
diff --git a/package.json b/package.json
index e1ae4c9..da956b7 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "check": "tsc --noEmit"
   },
   "dependencies": {
-    "@start9labs/start-sdk": "1.5.2"
+    "@start9labs/start-sdk": "1.5.3"
   },
   "devDependencies": {
     "@types/node": "^22.19.0",
diff --git a/startos/manifest/index.ts b/startos/manifest/index.ts
index 0f6ab31..c6a51fe 100644
--- a/startos/manifest/index.ts
+++ b/startos/manifest/index.ts
@@ -14,7 +14,7 @@ export const manifest = setupManifest({
   images: {
     synapse: {
       source: {
-        dockerTag: 'ghcr.io/element-hq/synapse:v1.152.1',
+        dockerTag: 'ghcr.io/element-hq/synapse:v1.153.0',
       },
       arch: ['x86_64', 'aarch64'],
     },
diff --git a/startos/versions/index.ts b/startos/versions/index.ts
index 43249b3..b371599 100644
--- a/startos/versions/index.ts
+++ b/startos/versions/index.ts
@@ -1,7 +1,7 @@
 import { VersionGraph } from '@start9labs/start-sdk'
-import { v_1_152_1_2 } from './v1.152.1_2'
+import { v_1_153_0_0 } from './v1.153.0_0'
 
 export const versionGraph = VersionGraph.of({
-  current: v_1_152_1_2,
+  current: v_1_153_0_0,
   other: [],
 })
diff --git a/startos/versions/v1.152.1_2.ts b/startos/versions/v1.152.1_2.ts
deleted file mode 100644
index 2c18d68..0000000
--- a/startos/versions/v1.152.1_2.ts
+++ /dev/null
@@ -1,21 +0,0 @@
-import { IMPOSSIBLE, VersionInfo } from '@start9labs/start-sdk'
-import { sdk } from '../sdk'
-
-export const v_1_152_1_2 = VersionInfo.of({
-  version: '1.152.1:2',
-  releaseNotes: {
-    en_US: 'Fixes a bug that caused database backups to be empty.',
-    es_ES: 'Corrige un error que provocaba que las copias de seguridad de la base de datos estuvieran vacías.',
-    de_DE: 'Behebt einen Fehler, durch den Datenbank-Backups leer waren.',
-    pl_PL: 'Naprawia błąd powodujący, że kopie zapasowe bazy danych były puste.',
-    fr_FR: 'Corrige un bug qui rendait les sauvegardes de base de données vides.',
-  },
-  migrations: {
-    up: async ({ effects }) => {
-      // The "create-admin-user" action was removed; clear any outstanding
-      // task pointing at it so users mid-setup don't see a broken task.
-      await sdk.action.clearTask(effects, 'synapse:create-admin-user')
-    },
-    down: IMPOSSIBLE,
-  },
-})
diff --git a/startos/versions/v1.153.0_0.ts b/startos/versions/v1.153.0_0.ts
new file mode 100644
index 0000000..d76a26d
--- /dev/null
+++ b/startos/versions/v1.153.0_0.ts
@@ -0,0 +1,21 @@
+import { IMPOSSIBLE, VersionInfo } from '@start9labs/start-sdk'
+import { sdk } from '../sdk'
+
+export const v_1_153_0_0 = VersionInfo.of({
+  version: '1.153.0:0',
+  releaseNotes: {
+    en_US: 'Bumps Synapse → 1.153.0.',
+    es_ES: 'Actualiza Synapse → 1.153.0.',
+    de_DE: 'Aktualisiert Synapse → 1.153.0.',
+    pl_PL: 'Aktualizuje Synapse → 1.153.0.',
+    fr_FR: 'Met à jour Synapse → 1.153.0.',
+  },
+  migrations: {
+    up: async ({ effects }) => {
+      // The "create-admin-user" action was removed; clear any outstanding
+      // task pointing at it so users mid-setup don't see a broken task.
+      await sdk.action.clearTask(effects, 'synapse:create-admin-user')
+    },
+    down: IMPOSSIBLE,
+  },
+})