diff --git a/coordinator/internal/logic/provertask/batch_prover_task.go b/coordinator/internal/logic/provertask/batch_prover_task.go
index 36409abf9a..28ec5685a5 100644
--- a/coordinator/internal/logic/provertask/batch_prover_task.go
+++ b/coordinator/internal/logic/provertask/batch_prover_task.go
@@ -144,14 +144,14 @@ func (bp *BatchProverTask) Assign(ctx *gin.Context, getTaskParameter *coordinato
 		return nil, ErrCoordinatorInternalFailure
 	}
 
-	//if _, ok := taskCtx.HardForkNames[hardForkName]; !ok {
-	//	bp.recoverActiveAttempts(ctx, batchTask)
-	//	log.Error("incompatible prover version",
-	//		"requisite hard fork name", hardForkName,
-	//		"prover hard fork name", taskCtx.HardForkNames,
-	//		"task_id", batchTask.Hash)
-	//	return nil, ErrCoordinatorInternalFailure
-	//}
+	if _, ok := taskCtx.HardForkNames[hardForkName]; !ok {
+		bp.recoverActiveAttempts(ctx, batchTask)
+		log.Error("incompatible prover version",
+			"requisite hard fork name", hardForkName,
+			"prover hard fork name", taskCtx.HardForkNames,
+			"task_id", batchTask.Hash)
+		return nil, ErrCoordinatorInternalFailure
+	}
 
 	proverTask := orm.ProverTask{
 		TaskID:          batchTask.Hash,
diff --git a/coordinator/internal/logic/provertask/bundle_prover_task.go b/coordinator/internal/logic/provertask/bundle_prover_task.go
index aac066f5e4..50d01295d1 100644
--- a/coordinator/internal/logic/provertask/bundle_prover_task.go
+++ b/coordinator/internal/logic/provertask/bundle_prover_task.go
@@ -144,14 +144,14 @@ func (bp *BundleProverTask) Assign(ctx *gin.Context, getTaskParameter *coordinat
 		return nil, ErrCoordinatorInternalFailure
 	}
 
-	//if _, ok := taskCtx.HardForkNames[hardForkName]; !ok {
-	//	bp.recoverActiveAttempts(ctx, bundleTask)
-	//	log.Error("incompatible prover version",
-	//		"requisite hard fork name", hardForkName,
-	//		"prover hard fork name", taskCtx.HardForkNames,
-	//		"task_id", bundleTask.Hash)
-	//	return nil, ErrCoordinatorInternalFailure
-	//}
+	if _, ok := taskCtx.HardForkNames[hardForkName]; !ok {
+		bp.recoverActiveAttempts(ctx, bundleTask)
+		log.Error("incompatible prover version",
+			"requisite hard fork name", hardForkName,
+			"prover hard fork name", taskCtx.HardForkNames,
+			"task_id", bundleTask.Hash)
+		return nil, ErrCoordinatorInternalFailure
+	}
 
 	proverTask := orm.ProverTask{
 		TaskID:          bundleTask.Hash,
diff --git a/coordinator/internal/logic/provertask/chunk_prover_task.go b/coordinator/internal/logic/provertask/chunk_prover_task.go
index 90084bb6a7..19cd103b3d 100644
--- a/coordinator/internal/logic/provertask/chunk_prover_task.go
+++ b/coordinator/internal/logic/provertask/chunk_prover_task.go
@@ -142,14 +142,14 @@ func (cp *ChunkProverTask) Assign(ctx *gin.Context, getTaskParameter *coordinato
 		return nil, ErrCoordinatorInternalFailure
 	}
 
-	//if _, ok := taskCtx.HardForkNames[hardForkName]; !ok {
-	//	cp.recoverActiveAttempts(ctx, chunkTask)
-	//	log.Error("incompatible prover version",
-	//		"requisite hard fork name", hardForkName,
-	//		"prover hard fork name", taskCtx.HardForkNames,
-	//		"task_id", chunkTask.Hash)
-	//	return nil, ErrCoordinatorInternalFailure
-	//}
+	if _, ok := taskCtx.HardForkNames[hardForkName]; !ok {
+		cp.recoverActiveAttempts(ctx, chunkTask)
+		log.Error("incompatible prover version",
+			"requisite hard fork name", hardForkName,
+			"prover hard fork name", taskCtx.HardForkNames,
+			"task_id", chunkTask.Hash)
+		return nil, ErrCoordinatorInternalFailure
+	}
 
 	proverTask := orm.ProverTask{
 		TaskID:          chunkTask.Hash,