diff --git a/requirements.txt b/requirements.txt
index 3b9babf7..e42affa3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@
 ## Install numpy (if it's the first time) then all the packages listed in this file (see
 ## docs/create-pyenv.md about whether to add `--no-binary numpy,scipy` to these steps):
 ## [When updating numpy here also update it below, in Dockerfile, and in docs/*.]
-#   pip install numpy==1.19.5
+#   pip install numpy==1.22.0
 #   pip install -r requirements.txt && pyenv rehash
 
 # Installers
@@ -49,7 +49,7 @@ wheel>=0.34.2
 # pytest-cov is for `pytest --cov`.
 #
 # TODO: Periodically unfreeze, update, test, and refreeze.
-numpy==1.19.5
+numpy==1.22.0
 scipy==1.5.4
 
 aesara==2.0.8