diff --git a/buildkite/docker/ubuntu1604/requirements.txt b/buildkite/docker/ubuntu1604/requirements.txt
index 0d3ca1e..fdc5d60 100644
--- a/buildkite/docker/ubuntu1604/requirements.txt
+++ b/buildkite/docker/ubuntu1604/requirements.txt
@@ -1,6 +1,6 @@
-certifi==2023.7.22 \
-    --hash=sha256:539cc1d13202e33ca466e88b2807e29f4c13049d6d87031a3c110744495cb082 \
-    --hash=sha256:92d6037539857d8206b8f6ae472e8b77db8058fec5937a1ef3f54304089edbb9
+certifi==2024.7.4 \
+    --hash=sha256:5a1e7645bc0ec61a09e26c36f6106dd4cf40c6db3a1fb6352b0244e7fb057c7b \
+    --hash=sha256:c198e21b1289c2ab85ee4e67bb4b4ef3ead0892059901a8d5b622f24a1101e90
 chardet==3.0.4 \
     --hash=sha256:84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae \
     --hash=sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691