diff --git a/requirements.dev.txt b/requirements.dev.txt
index 22e3812b..144a0ed6 100644
--- a/requirements.dev.txt
+++ b/requirements.dev.txt
@@ -1,5 +1,5 @@
-nose
-coverage
 black
+coverage
 isort
+nose
 pylint==2.7.4
diff --git a/requirements.txt b/requirements.txt
index a8c92e87..13c9257f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,20 +1,20 @@
-torch>=1.7
-numpy==1.18.5
-scipy>=0.19.0
-librosa==0.7.2
-phonemizer>=2.2.0
-unidecode==0.4.20
-pypinyin
-jieba
-tensorboardX
-matplotlib
-flask
-tqdm
-inflect
-pysbd
-soundfile
-gdown
-umap-learn==0.4.6
 cython
-pyyaml
+flask
 fsspec>=0.8.0
+gdown
+inflect
+jieba
+librosa==0.7.2
+matplotlib
+numpy==1.18.5
+phonemizer>=2.2.0
+pypinyin
+pysbd
+pyyaml
+scipy>=0.19.0
+soundfile
+tensorboardX
+torch>=1.7
+tqdm
+umap-learn==0.4.6
+unidecode==0.4.20