diff --git a/en/guide/configuration.md b/en/guide/configuration.md
index 9cc12b7..15f545c 100644
--- a/en/guide/configuration.md
+++ b/en/guide/configuration.md
@@ -5,7 +5,7 @@
 ### Web Backend
 
 | Name | Default Value | Description |
-| ---- | ----- | ----------- |
+| ---- | ------------- | ----------- |
 | POSTGRES_HOST | `postgres` | Postgres connection host |
 | POSTGRES_PORT | `5432` | Postgres connection port |
 | POSTGRES_DB | `onlinejudge` | Postgres database name |
@@ -13,10 +13,13 @@
 | POSTGRES_PASSWORD | `onlinejudge` | Postgres user password |
 | REDIS_HOST | `redis` | Redis connection host |
 | REDIS_PORT | `6379` | Redis connection port |
-| JUDGE_SERVER_TOKEN | (empty) | password used in judge server authentication |
+| JUDGE_SERVER_TOKEN | (empty) | Password used in judge server authentication |
 
 ### Judge Server
 
 | Name | Default Value | Description |
-| ---- | ----- | ----------- |
-| JUDGE_SERVER_TOKEN | (empty) | password used in judge server authentication |
+| ---- | ------------- | ----------- |
+| JUDGE_SERVER_TOKEN | (empty) | Password used in judge server authentication |
+| BACKEND_URL | (empty) | Judge server will send heartbeats to this URL (API server) every five seconds |
+| SERVICE_URL | (empty) | API server will send tasks to this URL (judge server) |
+| judger_debug | (empty) | If value is 1, enable debug logging, judge cases will not be deleted |
diff --git a/en/management/backup_and_restore.md b/en/management/backup_and_restore.md
index beeeece..256026d 100644
--- a/en/management/backup_and_restore.md
+++ b/en/management/backup_and_restore.md
@@ -20,7 +20,7 @@
   zstd -d "<backup file>" | docker compose exec postgres psql
   ```
 
-## Test case
+## Testcase
 
 - backup