diff --git a/requirements.txt b/requirements.txt
index ee7ebc77f..d71c5b27a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 cirq-core==0.13.1
 cirq-google==0.13.1
 sympy==1.8
-numpy==1.19.5  # TensorFlow can detect if it was built against other versions.
+numpy==1.22.0  # TensorFlow can detect if it was built against other versions.
 nbformat==4.4.0
 pylint==2.4.4
 yapf==0.28.0