diff --git a/buildbot/google/docker/buildbot-mlir-nvidia/Dockerfile b/buildbot/google/docker/buildbot-mlir-nvidia/Dockerfile
--- a/buildbot/google/docker/buildbot-mlir-nvidia/Dockerfile
+++ b/buildbot/google/docker/buildbot-mlir-nvidia/Dockerfile
@@ -34,7 +34,7 @@
 
 # Refer to mlir/lib/Bindings/Python/requirements.txt. Listed explicitly here
 # and version pinned for consistency as this is a bot.
-RUN python3 -m pip install numpy==1.19.3 pybind11==2.8.0 PyYAML==5.4.1
+RUN python3 -m pip install numpy==1.19.3 pybind11==2.9.0 PyYAML==5.4.1
 
 # install cuda
 # avoid popups for keyboard configurations