diff --git a/src/open_r1/evaluate.py b/src/open_r1/evaluate.py
index 0447b266..b32389ac 100644
--- a/src/open_r1/evaluate.py
+++ b/src/open_r1/evaluate.py
@@ -106,6 +106,20 @@ def gpqa_prompt_fn(line, task_name: str = None):
     metric=[expr_gold_metric],
     version=1,
 )
+aime25 = LightevalTaskConfig(
+    name="aime25",
+    suite=["custom"],
+    prompt_function=aime_prompt_fn,
+    hf_repo="open-r1/aime_2025_1",
+    hf_subset="default",
+    hf_avail_splits=["train"],
+    evaluation_splits=["train"],
+    few_shots_split=None,
+    few_shots_select=None,
+    generation_size=32768,
+    metric=[expr_gold_metric],
+    version=1,
+)
 math_500 = LightevalTaskConfig(
     name="math_500",
     suite=["custom"],
@@ -141,6 +155,7 @@ def gpqa_prompt_fn(line, task_name: str = None):
 # Add tasks to the table
 TASKS_TABLE = []
 TASKS_TABLE.append(aime24)
+TASKS_TABLE.append(aime25)
 TASKS_TABLE.append(math_500)
 TASKS_TABLE.append(gpqa_diamond)
 
diff --git a/src/open_r1/utils/evaluation.py b/src/open_r1/utils/evaluation.py
index 86de906d..48997183 100644
--- a/src/open_r1/utils/evaluation.py
+++ b/src/open_r1/utils/evaluation.py
@@ -48,6 +48,7 @@ def register_lighteval_task(
 
 register_lighteval_task(LIGHTEVAL_TASKS, "custom", "math_500", "math_500", 0)
 register_lighteval_task(LIGHTEVAL_TASKS, "custom", "aime24", "aime24", 0)
+register_lighteval_task(LIGHTEVAL_TASKS, "custom", "aime25", "aime25", 0)
 register_lighteval_task(LIGHTEVAL_TASKS, "custom", "gpqa", "gpqa:diamond", 0)