diff --git a/apps/backend/package.json b/apps/backend/package.json
index 3cce95d..239face 100644
--- a/apps/backend/package.json
+++ b/apps/backend/package.json
@@ -26,7 +26,7 @@
     "@workspace/database": "workspace:*",
     "drizzle-orm": "^0.45.4",
     "hono": "^4.13.13",
-    "ioredis": "~5.6.1",
+    "ioredis": "~6.0.0",
     "ws": "^8.22.0",
     "yjs": "^13.6.33",
     "zod": "^4.6.7"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 3c3d07b..9380fd0 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -218,8 +218,8 @@ importers:
         specifier: ^4.13.13
         version: 4.13.13
       ioredis:
-        specifier: ~5.6.1
-        version: 5.6.1
+        specifier: ~6.0.0
+        version: 6.0.0
       ws:
         specifier: ^8.22.0
         version: 8.22.0
@@ -1384,6 +1384,9 @@ packages:
   '@ioredis/commands@1.11.0':
     resolution: {integrity: sha512-tuMmOu6dtyGFv/fzCjtapCJj/zgoHaFsqs3wKsroJSRXtlLmyL/t+B7uaQiavGk1F3WWFQcUqZwk92bpp9jKcA==}
 
+  '@ioredis/commands@2.0.0':
+    resolution: {integrity: sha512-vrx0AE/T0h7cRZwfo1M39Cr+ZhZrkf0V8mQN75wucKCxCLD9l/VX6no3gFvrLqD1IlG/1LtzWovqEw3t0Vr9zg==}
+
   '@jridgewell/gen-mapping@0.3.13':
     resolution: {integrity: sha512-2kkt/7niJ6MgEPxF0bYdQ6etZaA+fQvDcLKckhy1yIQOzaoKjBBjSj63/aLVjYE3qhRt5dvM+uUyfCg6UKCBbA==}
 
@@ -2373,6 +2376,10 @@ packages:
     resolution: {integrity: sha512-eYm0QWBtUrBWZWG0d386OGAw16Z995PiOVo2B7bjWSbHedGl5e0ZWaq65kOGgUSNesEIDkB9ISbTg/JK9dhCZA==}
     engines: {node: '>=6'}
 
+  cluster-key-slot@1.1.1:
+    resolution: {integrity: sha512-rwHwUfXL40Chm1r08yrhU3qpUvdVlgkKNeyeGPOxnW8/SyVDvgRaed/Uz54AqWNaTCAThlj6QAs3TZcKI0xDEw==}
+    engines: {node: '>=0.10.0'}
+
   cluster-key-slot@1.1.2:
     resolution: {integrity: sha512-RMr0FhtfXemyinomL4hrWcYJxmX6deFdCxpJzhDttxgO1+bcCnkk+9drydLVDmAMG7NE6aN/fl4F7ucU/90gAA==}
     engines: {node: '>=0.10.0'}
@@ -2972,6 +2979,10 @@ packages:
     resolution: {integrity: sha512-UxC0Yv1Y4WRJiGQxQkP0hfdL0/5/6YvdfOOClRgJ0qppSarkhneSa6UvkMkms0AkdGimSH3Ikqm+6mkMmX7vGA==}
     engines: {node: '>=12.22.0'}
 
+  ioredis@6.0.0:
+    resolution: {integrity: sha512-f+Dtubxfpf6KYFq7WVXJoOLn0bk4TJrMrN9SzeE+jrWrCWj7XX3fA6vkryafhADX+GMymRxgDJDOI33COkJc0w==}
+    engines: {node: '>=20.0.0'}
+
   ip-address@10.7.4:
     resolution: {integrity: sha512-DWBMKyeM25D70nrIiTkgQth59/G+naKOTep6huF9j+GmeK3DMD60Zvxg5d5qQnz+38AHgou6ean2LECX+lrKDg==}
     engines: {node: '>= 12'}
@@ -4993,6 +5004,8 @@ snapshots:
 
   '@ioredis/commands@1.11.0': {}
 
+  '@ioredis/commands@2.0.0': {}
+
   '@jridgewell/gen-mapping@0.3.13':
     dependencies:
       '@jridgewell/sourcemap-codec': 1.6.0
@@ -5712,6 +5725,8 @@ snapshots:
 
   clsx@2.1.1: {}
 
+  cluster-key-slot@1.1.1: {}
+
   cluster-key-slot@1.1.2: {}
 
   cn@0.2.6: {}
@@ -6275,6 +6290,17 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  ioredis@6.0.0:
+    dependencies:
+      '@ioredis/commands': 2.0.0
+      cluster-key-slot: 1.1.1
+      debug: 4.4.3
+      denque: 2.1.0
+      redis-errors: 1.2.0
+      standard-as-callback: 2.1.0
+    transitivePeerDependencies:
+      - supports-color
+
   ip-address@10.7.4: {}
 
   ipaddr.js@1.9.1: {}