diff --git a/dvc.lock b/dvc.lock
index 5cf30dc..6729b23 100644
--- a/dvc.lock
+++ b/dvc.lock
@@ -5,8 +5,8 @@ stages:
     deps:
     - path: prepare.py
       hash: md5
-      md5: a1c07d1d5caf6e5288560a189415785c
-      size: 2979
+      md5: f0fd9944ebe22e1af020f031847991ed
+      size: 2992
     params:
       params.yaml:
         prepare:
@@ -19,21 +19,21 @@ stages:
     outs:
     - path: data/processed
       hash: md5
-      md5: f4bf62ffa725ca9144b7852a283dc1da.dir
-      size: 295118798
-      nfiles: 60000
+      md5: a47a61b2a1709f487fd286e9c54b89fc.dir
+      size: 295124946
+      nfiles: 60001
   train:
     cmd: python train.py
     deps:
     - path: data/processed
       hash: md5
-      md5: f4bf62ffa725ca9144b7852a283dc1da.dir
-      size: 295118798
-      nfiles: 60000
+      md5: a47a61b2a1709f487fd286e9c54b89fc.dir
+      size: 295124946
+      nfiles: 60001
     - path: train.py
       hash: md5
-      md5: b797ccf2fe61952bbf6d83fa51b0b11f
-      size: 3407
+      md5: aabaf1a407badf48c97b14a69b0072ea
+      size: 3420
     params:
       params.yaml:
         train:
@@ -46,3 +46,23 @@ stages:
       hash: md5
       md5: 8ead2a7cd52d70b359d3cdc3df5e43e3
       size: 102592994
+  evaluate:
+    cmd: python evaluate.py
+    deps:
+    - path: data/processed
+      hash: md5
+      md5: a47a61b2a1709f487fd286e9c54b89fc.dir
+      size: 295124946
+      nfiles: 60001
+    - path: evaluate.py
+      hash: md5
+      md5: 8a9a2e95a6b64e632a4f2feac62d294b
+      size: 1473
+    - path: model.pt
+      hash: md5
+      md5: 8ead2a7cd52d70b359d3cdc3df5e43e3
+      size: 102592994
+    params:
+      params.yaml:
+        evaluate:
+          data_dir: data/processed
diff --git a/dvc.yaml b/dvc.yaml
index 33c2a8a..f71de74 100644
--- a/dvc.yaml
+++ b/dvc.yaml
@@ -24,8 +24,6 @@ stages:
     - model.pt
     params:
     - evaluate
-    outs:
-    - eval
 params:
 - dvclive/train/params.yaml
 - dvclive/eval/params.yaml
diff --git a/dvclive/eval/metrics.json b/dvclive/eval/metrics.json
index 59e3ec6..5b1327d 100644
--- a/dvclive/eval/metrics.json
+++ b/dvclive/eval/metrics.json
@@ -1,3 +1,3 @@
 {
-    "test_acc": 0.7336928844451904
+    "test_acc": 0.7336809039115906
 }
diff --git a/dvclive/eval/plots/metrics/test_acc.tsv b/dvclive/eval/plots/metrics/test_acc.tsv
index f4169b0..6d4a371 100644
--- a/dvclive/eval/plots/metrics/test_acc.tsv
+++ b/dvclive/eval/plots/metrics/test_acc.tsv
@@ -1,2 +1,2 @@
 step	test_acc
-0	0.7336928844451904
+0	0.7336809039115906
diff --git a/dvclive/eval/report.md b/dvclive/eval/report.md
index 6e43a9c..678f542 100644
--- a/dvclive/eval/report.md
+++ b/dvclive/eval/report.md
@@ -10,6 +10,6 @@ metrics.json
 
 |   test_acc |
 |------------|
-|   0.733693 |
+|   0.733681 |
 
 ![static/test_acc](static/test_acc.png)
diff --git a/evaluate.py b/evaluate.py
index d0dcad8..772cfca 100644
--- a/evaluate.py
+++ b/evaluate.py
@@ -21,7 +21,7 @@ def evaluate(params_path: str = 'params.yaml') -> None:
         params_path (str, optional): path of parameter yaml. Defaults to 'params.yaml'.
     """
 
-    with open(params_path, 'r') as f:
+    with open(params_path, encoding='utf-8') as f:
         params = yaml.safe_load(f)
     data_dir = Path(params['evaluate']['data_dir'])
 
@@ -39,11 +39,12 @@ def evaluate(params_path: str = 'params.yaml') -> None:
     with Live(dir='dvclive/eval', report='md') as live:
         live.log_params(params['evaluate'])
 
-        for data in test_dataloader:
-            inputs, labels = data[0].to(device), data[1].to(device)
-            outputs = net(inputs)
-            _ = metric(outputs, labels)
-        test_acc = metric.compute()
+        with torch.no_grad():
+            for data in test_dataloader:
+                inputs, labels = data[0].to(device), data[1].to(device)
+                outputs = net(inputs)
+                _ = metric(outputs, labels)
+            test_acc = metric.compute()
 
         print(f'test_acc:{test_acc}')
         live.log_metric('test_acc', float(test_acc.cpu()))
diff --git a/prepare.py b/prepare.py
index 0c36846..6c4d647 100644
--- a/prepare.py
+++ b/prepare.py
@@ -19,7 +19,7 @@ def prepare(params_path: str = 'params.yaml') -> None:
         params_path (str, optional): path of parameter yaml. Defaults to 'params.yaml'.
     """
 
-    with open(params_path, 'r') as f:
+    with open(params_path, encoding='utf-8') as f:
         params = yaml.safe_load(f)
     data_dir = Path(params['prepare']['data_dir'])
     save_dir = Path(params['prepare']['save_dir'])
diff --git a/train.py b/train.py
index 56c4480..8bb54f8 100644
--- a/train.py
+++ b/train.py
@@ -23,7 +23,7 @@ def train(params_path: str = 'params.yaml') -> None:
         params_path (str, optional): path of parameter yaml. Defaults to 'params.yaml'.
     """
 
-    with open(params_path, 'r') as f:
+    with open(params_path, encoding='utf-8') as f:
         params = yaml.safe_load(f)
     data_dir = Path(params['train']['data_dir'])
     epochs = params['train']['epochs']