diff --git a/tacotron2/requirements.txt b/tacotron2/requirements.txt
index 11eccea..9ad9b3b 100644
--- a/tacotron2/requirements.txt
+++ b/tacotron2/requirements.txt
@@ -1,6 +1,6 @@
 matplotlib==2.1.0
 tensorflow
-numpy==1.13.3
+numpy==1.22.0
 inflect==0.2.5
 librosa==0.6.0
 scipy==1.0.0
diff --git a/tacotron2/waveglow/requirements.txt b/tacotron2/waveglow/requirements.txt
index 11eccea..9ad9b3b 100644
--- a/tacotron2/waveglow/requirements.txt
+++ b/tacotron2/waveglow/requirements.txt
@@ -1,6 +1,6 @@
 matplotlib==2.1.0
 tensorflow
-numpy==1.13.3
+numpy==1.22.0
 inflect==0.2.5
 librosa==0.6.0
 scipy==1.0.0