diff --git a/kokoro/gcp_ubuntu/requirements.txt b/kokoro/gcp_ubuntu/requirements.txt
index 3639cc986..f09c09e57 100644
--- a/kokoro/gcp_ubuntu/requirements.txt
+++ b/kokoro/gcp_ubuntu/requirements.txt
@@ -1,6 +1,6 @@
 # pip requirements generated from pypi
 pip==24.0 --hash=sha256:ba0d021a166865d2265246961bec0152ff124de910c5cc39f1156ce3fa7c69dc
-virtualenv==20.25.1 --hash=sha256:961c026ac520bac5f69acb8ea063e8a4f071bcc9457b9c1f28f6b085c511583a
+virtualenv==20.26.6 --hash=sha256:280aede09a2a5c317e409a00102e7077c6432c5a38f0ef938e643805a7ad2c48 --hash=sha256:7345cc5b25405607a624d8418154577459c3e0277f5466dd79c49d5e492995f2
 distlib==0.3.8 --hash=sha256:034db59a0b96f8ca18035f36290806a9a6e6bd9d1ff91e45a7f172eb17e51784
 filelock==3.15.4 --hash=sha256:6ca1fffae96225dab4c6eaf1c4f4f28cd2568d3ec2a44e15a08520504de468e7
 platformdirs==4.2.2 --hash=sha256:2d7a1657e36a80ea911db832a8a6ece5ee53d8de21edd5cc5879af6530b1bfee