diff --git a/.kokoro/tests/requirements.txt b/.kokoro/tests/requirements.txt
index 00f3d223..6acdbab0 100644
--- a/.kokoro/tests/requirements.txt
+++ b/.kokoro/tests/requirements.txt
@@ -16,9 +16,9 @@ distlib==0.3.6 \
     --hash=sha256:14bad2d9b04d3a36127ac97f30b12a19268f211063d8f8ee4f47108896e11b46 \
     --hash=sha256:f35c4b692542ca110de7ef0bea44d73981caeb34ca0b9b6b2e6d7790dda8f80e
     # via virtualenv
-filelock==3.8.0 \
-    --hash=sha256:55447caa666f2198c5b6b13a26d2084d26fa5b115c00d065664b2124680c4edc \
-    --hash=sha256:617eb4e5eedc82fc5f47b6d61e4d11cb837c56cb4544e39081099fa17ad109d4
+filelock==3.20.3 \
+    --hash=sha256:18c57ee915c7ec61cff0ecf7f0f869936c7c30191bb0cf406f1341778d0834e1 \
+    --hash=sha256:4b0dda527ee31078689fc205ec4f1c1bf7d56cf88b6dc9426c4f230e46c2dce1
     # via virtualenv
 importlib-metadata==4.13.0 \
     --hash=sha256:8a8a81bcf996e74fee46f0d16bd3eaa382a7eb20fd82445c3ad11f4090334116 \