diff --git a/.env.example b/.env.example
index 830ef1c..9312812 100644
--- a/.env.example
+++ b/.env.example
@@ -7,6 +7,6 @@ PORT=8787
 
 DEFAULT_BASE_BRANCH=main
 MAX_INLINE_COMMENTS=5
-REVIEW_TIMEOUT_MS=600000
+REVIEW_TIMEOUT_MS=300000
 DEDUPE_TTL_SECONDS=1800
 LOG_LEVEL=info
diff --git a/README.md b/README.md
index 502e0fe..09ed30f 100644
--- a/README.md
+++ b/README.md
@@ -154,7 +154,7 @@ Optional:
 
 - `DEFAULT_BASE_BRANCH` (default: `main`)
 - `MAX_INLINE_COMMENTS` (default: `5`)
-- `REVIEW_TIMEOUT_MS` (default: `600000`, 10 minutes)
+- `REVIEW_TIMEOUT_MS` (default: `300000`, 5 minutes)
 - `DEDUPE_TTL_SECONDS` (default: `1800`)
 - `LOG_LEVEL` (default: `info`; options: `debug`, `info`, `warn`, `error`)
 
diff --git a/src/config/env.ts b/src/config/env.ts
index d4d8dec..4908667 100644
--- a/src/config/env.ts
+++ b/src/config/env.ts
@@ -9,7 +9,7 @@ const envSchema = z.object({
   PORT: z.coerce.number().int().positive().default(8787),
   DEFAULT_BASE_BRANCH: z.string().default("main"),
   MAX_INLINE_COMMENTS: z.coerce.number().int().positive().default(5),
-  REVIEW_TIMEOUT_MS: z.coerce.number().int().positive().default(600000),
+  REVIEW_TIMEOUT_MS: z.coerce.number().int().positive().default(300000),
   DEDUPE_TTL_SECONDS: z.coerce.number().int().positive().default(1800)
 });