diff --git a/examples/aishell/asr1/conf/chunk_conformer.yaml b/examples/aishell/asr1/conf/chunk_conformer.yaml
index e07cd07c..80b45587 100644
--- a/examples/aishell/asr1/conf/chunk_conformer.yaml
+++ b/examples/aishell/asr1/conf/chunk_conformer.yaml
@@ -90,7 +90,7 @@ training:
   optim_conf:
     lr: 0.001
     weight_decay: 1e-6
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/aishell/asr1/conf/transformer.yaml b/examples/aishell/asr1/conf/transformer.yaml
index d13f9e2f..60ec0180 100644
--- a/examples/aishell/asr1/conf/transformer.yaml
+++ b/examples/aishell/asr1/conf/transformer.yaml
@@ -80,7 +80,7 @@ training:
   optim_conf:
     lr: 0.002
     weight_decay: 1e-6
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/callcenter/asr1/conf/chunk_conformer.yaml b/examples/callcenter/asr1/conf/chunk_conformer.yaml
index d20d2b9a..69959c68 100644
--- a/examples/callcenter/asr1/conf/chunk_conformer.yaml
+++ b/examples/callcenter/asr1/conf/chunk_conformer.yaml
@@ -88,7 +88,7 @@ training:
   optim_conf:
     lr: 0.001
     weight_decay: 1e-6
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/callcenter/asr1/conf/conformer.yaml b/examples/callcenter/asr1/conf/conformer.yaml
index f86cd4a3..80c15abb 100644
--- a/examples/callcenter/asr1/conf/conformer.yaml
+++ b/examples/callcenter/asr1/conf/conformer.yaml
@@ -83,7 +83,7 @@ training:
   optim_conf:
     lr: 0.002
     weight_decay: 1e-6
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/librispeech/asr1/conf/chunk_conformer.yaml b/examples/librispeech/asr1/conf/chunk_conformer.yaml
index 4a574190..54580664 100644
--- a/examples/librispeech/asr1/conf/chunk_conformer.yaml
+++ b/examples/librispeech/asr1/conf/chunk_conformer.yaml
@@ -90,7 +90,7 @@ training:
   optim_conf:
     lr: 0.001
     weight_decay: 1e-06
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/librispeech/asr1/conf/chunk_transformer.yaml b/examples/librispeech/asr1/conf/chunk_transformer.yaml
index c2644daf..70a9dc6a 100644
--- a/examples/librispeech/asr1/conf/chunk_transformer.yaml
+++ b/examples/librispeech/asr1/conf/chunk_transformer.yaml
@@ -83,7 +83,7 @@ training:
   optim_conf:
     lr: 0.001
     weight_decay: 1e-06
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/librispeech/asr1/conf/conformer.yaml b/examples/librispeech/asr1/conf/conformer.yaml
index 684b6297..ca934eb1 100644
--- a/examples/librispeech/asr1/conf/conformer.yaml
+++ b/examples/librispeech/asr1/conf/conformer.yaml
@@ -86,7 +86,7 @@ training:
   optim_conf:
     lr: 0.004
     weight_decay: 1e-06
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/librispeech/asr2/conf/transformer.yaml b/examples/librispeech/asr2/conf/transformer.yaml
index 3e9350ab..00240743 100644
--- a/examples/librispeech/asr2/conf/transformer.yaml
+++ b/examples/librispeech/asr2/conf/transformer.yaml
@@ -75,7 +75,7 @@ optim: adam
 optim_conf:
   global_grad_clip: 5.0
   weight_decay: 1.0e-06
-scheduler: warmuplr     # pytorch v1.1.0+ required
+scheduler: warmuplr     
 scheduler_conf:
   lr: 0.004
   warmup_steps: 25000
diff --git a/examples/ted_en_zh/st0/conf/transformer.yaml b/examples/ted_en_zh/st0/conf/transformer.yaml
index 5a05fa46..6ed75be4 100644
--- a/examples/ted_en_zh/st0/conf/transformer.yaml
+++ b/examples/ted_en_zh/st0/conf/transformer.yaml
@@ -82,7 +82,7 @@ training:
   optim_conf:
     lr: 0.004
     weight_decay: 1e-06
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/ted_en_zh/st1/conf/transformer.yaml b/examples/ted_en_zh/st1/conf/transformer.yaml
index d553bde7..3bef7bc5 100644
--- a/examples/ted_en_zh/st1/conf/transformer.yaml
+++ b/examples/ted_en_zh/st1/conf/transformer.yaml
@@ -82,7 +82,7 @@ training:
   optim_conf:
     lr: 0.004
     weight_decay: 1e-06
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/timit/asr1/conf/transformer.yaml b/examples/timit/asr1/conf/transformer.yaml
index 89ae2fd3..af05a6ce 100644
--- a/examples/timit/asr1/conf/transformer.yaml
+++ b/examples/timit/asr1/conf/transformer.yaml
@@ -80,7 +80,7 @@ training:
   optim_conf:
     lr: 0.004
     weight_decay: 1e-06
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 1200
     lr_decay: 1.0
diff --git a/examples/tiny/asr1/conf/chunk_confermer.yaml b/examples/tiny/asr1/conf/chunk_confermer.yaml
index 728a82e3..76b97adf 100644
--- a/examples/tiny/asr1/conf/chunk_confermer.yaml
+++ b/examples/tiny/asr1/conf/chunk_confermer.yaml
@@ -90,7 +90,7 @@ training:
   optim_conf:
     lr: 0.001
     weight_decay: 1e-06
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/tiny/asr1/conf/chunk_transformer.yaml b/examples/tiny/asr1/conf/chunk_transformer.yaml
index 7c927122..5f1991f9 100644
--- a/examples/tiny/asr1/conf/chunk_transformer.yaml
+++ b/examples/tiny/asr1/conf/chunk_transformer.yaml
@@ -83,7 +83,7 @@ training:
   optim_conf:
     lr: 0.002
     weight_decay: 1e-06
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/tiny/asr1/conf/conformer.yaml b/examples/tiny/asr1/conf/conformer.yaml
index 21cc1128..b2937c1b 100644
--- a/examples/tiny/asr1/conf/conformer.yaml
+++ b/examples/tiny/asr1/conf/conformer.yaml
@@ -86,7 +86,7 @@ training:
   optim_conf:
     lr: 0.002
     weight_decay: 1e-06
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/tiny/asr1/conf/transformer.yaml b/examples/tiny/asr1/conf/transformer.yaml
index f4645c68..f5319756 100644
--- a/examples/tiny/asr1/conf/transformer.yaml
+++ b/examples/tiny/asr1/conf/transformer.yaml
@@ -80,7 +80,7 @@ training:
   optim_conf:
     lr: 0.002
     weight_decay: 1e-06
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 25000
     lr_decay: 1.0
diff --git a/examples/wenetspeech/asr1/conf/conformer.yaml b/examples/wenetspeech/asr1/conf/conformer.yaml
index a3a42ec6..fc040a79 100644
--- a/examples/wenetspeech/asr1/conf/conformer.yaml
+++ b/examples/wenetspeech/asr1/conf/conformer.yaml
@@ -87,7 +87,7 @@ training:
   optim_conf:
     lr: 0.001
     weight_decay: 1e-6
-  scheduler: warmuplr     # pytorch v1.1.0+ required
+  scheduler: warmuplr     
   scheduler_conf:
     warmup_steps: 5000
     lr_decay: 1.0