diff --git a/joj3_config_generator/models/result.py b/joj3_config_generator/models/result.py
index 7cd49cf..93ecfd9 100644
--- a/joj3_config_generator/models/result.py
+++ b/joj3_config_generator/models/result.py
@@ -125,6 +125,9 @@ class Config(BaseModel):
     name: str = ""
     log_path: str = Field("", serialization_alias="logPath")
     expire_unix_timestamp: int = Field(-1, serialization_alias="expireUnixTimestamp")
+    effective_unix_timestamp: int = Field(
+        -1, serialization_alias="effectiveUnixTimestamp"
+    )
     actor_csv_path: str = Field("", serialization_alias="actorCsvPath")
     max_total_score: int = Field(100, serialization_alias="maxTotalScore")
     stage: Stage
diff --git a/joj3_config_generator/models/task.py b/joj3_config_generator/models/task.py
index 5786234..7fc7767 100644
--- a/joj3_config_generator/models/task.py
+++ b/joj3_config_generator/models/task.py
@@ -97,6 +97,7 @@ class Stage(BaseModel):
 
 class Release(BaseModel):
     deadline: Optional[datetime]  # RFC 3339 formatted date-time with offset
+    begin_time: Optional[datetime]
 
 
 class Task(BaseModel):
diff --git a/tests/convert/basic/task.toml b/tests/convert/basic/task.toml
index e779d42..d8fd1ff 100644
--- a/tests/convert/basic/task.toml
+++ b/tests/convert/basic/task.toml
@@ -3,6 +3,7 @@ task.name = "hw7 ex2" # task name
 task.type = "homework/h7/e2" # remove this task type later
 
 release.deadline = 2024-12-30 23:59:59+08:00
+release.begin_time = 2024-12-29 23:59:59+08:00
 
 [[stages]]
 name = "Compilation"