diff --git a/requirements.txt b/requirements.txt
index c61b52c..ab21281 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ https://github.com/google-research/t5x/archive/master.zip  # Always compatible w
 seqio  # Always compatible with most up-to-date version.
 
 # Autodiff and numerical packages.
-numpy==1.21.5
+numpy==1.22.0
 tensorflow>=2.9.1
 jax==0.3.16
 jaxlib==0.3.15