diff --git a/requirements.txt b/requirements.txt
index 14fa1c1..0cc8256 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,19 +14,18 @@ soundfile>=0.12.1
 ffmpeg-python>=0.2.0
 tensorboardX
 Jinja2>=3.1.2
-json5>=0.9.11
+json5
 Markdown
-matplotlib>=3.7.1
-matplotlib-inline>=0.1.6
+matplotlib>=3.7.0
+matplotlib-inline>=0.1.3
 praat-parselmouth>=0.4.2
 Pillow>=9.1.1
-pyworld>=0.3.2
 resampy>=0.4.2
 scikit-learn
 starlette>=0.25.0
 tensorboard
 tqdm>=4.63.1
-tornado>=6.2
+tornado>=6.1
 Werkzeug>=2.2.3
 uc-micro-py>=1.0.1
 sympy>=1.11.1
@@ -35,7 +34,8 @@ PyYAML>=6.0
 pyasn1>=0.4.8
 pyasn1-modules>=0.2.8
 fsspec>=2022.11.0
-absl-py>=1.4.0
+absl-py>=1.2.0
 audioread
 uvicorn>=0.21.1
 colorama>=0.4.5
+pyworld>=0.3.2