diff --git a/.env.example b/.env.example
index 03238c2..9ea8a2a 100644
--- a/.env.example
+++ b/.env.example
@@ -4,6 +4,7 @@ DATABASE_URL=""
 # Redis
 UPSTASH_REDIS_REST_URL=""
 UPSTASH_REDIS_REST_TOKEN=""
+UPSTASH_REDIS_EXPIRY_SECONDS=""
 UPSTASH_RATELIMIT_REQUESTS=""
 UPSTASH_RATELIMIT_SECONDS=""
 
diff --git a/src/env.mjs b/src/env.mjs
index 52bf8c8..4c1f2de 100644
--- a/src/env.mjs
+++ b/src/env.mjs
@@ -8,6 +8,7 @@ const server = z.object({
   DATABASE_URL: z.string().url(),
   UPSTASH_REDIS_REST_URL: z.string().url(),
   UPSTASH_REDIS_REST_TOKEN: z.string(),
+  UPSTASH_REDIS_EXPIRY_SECONDS: z.string(),
   UPSTASH_RATELIMIT_REQUESTS: z.string(),
   UPSTASH_RATELIMIT_SECONDS: z.string(),
   NODE_ENV: z.enum(["development", "test", "production"]),
@@ -50,6 +51,7 @@ const processEnv = {
   DATABASE_URL: process.env.DATABASE_URL,
   UPSTASH_REDIS_REST_URL: process.env.UPSTASH_REDIS_REST_URL,
   UPSTASH_REDIS_REST_TOKEN: process.env.UPSTASH_REDIS_REST_TOKEN,
+  UPSTASH_REDIS_EXPIRY_SECONDS: process.env.UPSTASH_REDIS_EXPIRY_SECONDS,
   UPSTASH_RATELIMIT_REQUESTS: process.env.UPSTASH_RATELIMIT_REQUESTS,
   UPSTASH_RATELIMIT_SECONDS: process.env.UPSTASH_RATELIMIT_SECONDS,
   NODE_ENV: process.env.NODE_ENV,
diff --git a/src/server/api/routers/room.ts b/src/server/api/routers/room.ts
index 4c0f69a..0165fdd 100644
--- a/src/server/api/routers/room.ts
+++ b/src/server/api/routers/room.ts
@@ -90,7 +90,8 @@ export const roomRouter = createTRPCRouter({
 
       await redis.set(
         `${env.APP_ENV}_kv_roomlist_${ctx.session.user.id}`,
-        roomList
+        roomList,
+        { ex: Number(env.UPSTASH_REDIS_EXPIRY_SECONDS) }
       );
 
       return roomList;
@@ -107,7 +108,9 @@ export const roomRouter = createTRPCRouter({
     } else {
       const roomsCount = await ctx.prisma.room.count();
 
-      await redis.set(`${env.APP_ENV}_kv_roomcount_admin`, roomsCount);
+      await redis.set(`${env.APP_ENV}_kv_roomcount_admin`, roomsCount, {
+        ex: Number(env.UPSTASH_REDIS_EXPIRY_SECONDS),
+      });
 
       return roomsCount;
     }
diff --git a/src/server/api/routers/user.ts b/src/server/api/routers/user.ts
index f948d73..abd5b2a 100644
--- a/src/server/api/routers/user.ts
+++ b/src/server/api/routers/user.ts
@@ -21,7 +21,9 @@ export const userRouter = createTRPCRouter({
     } else {
       const usersCount = await ctx.prisma.user.count();
 
-      await redis.set(`${env.APP_ENV}_kv_usercount_admin`, usersCount);
+      await redis.set(`${env.APP_ENV}_kv_usercount_admin`, usersCount, {
+        ex: Number(env.UPSTASH_REDIS_EXPIRY_SECONDS),
+      });
 
       return usersCount;
     }
@@ -90,7 +92,9 @@ export const userRouter = createTRPCRouter({
         },
       });
 
-      await redis.set(`${env.APP_ENV}_kv_userlist_admin`, users);
+      await redis.set(`${env.APP_ENV}_kv_userlist_admin`, users, {
+        ex: Number(env.UPSTASH_REDIS_EXPIRY_SECONDS),
+      });
 
       return users;
     }
diff --git a/src/server/api/routers/vote.ts b/src/server/api/routers/vote.ts
index a11b938..60dd23d 100644
--- a/src/server/api/routers/vote.ts
+++ b/src/server/api/routers/vote.ts
@@ -17,7 +17,9 @@ export const voteRouter = createTRPCRouter({
     } else {
       const votesCount = await ctx.prisma.vote.count();
 
-      await redis.set(`${env.APP_ENV}_kv_votecount_admin`, votesCount);
+      await redis.set(`${env.APP_ENV}_kv_votecount_admin`, votesCount, {
+        ex: Number(env.UPSTASH_REDIS_EXPIRY_SECONDS),
+      });
 
       return votesCount;
     }
@@ -63,7 +65,8 @@ export const voteRouter = createTRPCRouter({
 
         await redis.set(
           `${env.APP_ENV}_kv_votes_${input.roomId}`,
-          votesByRoomId
+          votesByRoomId,
+          { ex: Number(env.UPSTASH_REDIS_EXPIRY_SECONDS) }
         );
 
         return votesByRoomId;