diff --git a/mlir/cmake/modules/MLIRDetectPythonEnv.cmake b/mlir/cmake/modules/MLIRDetectPythonEnv.cmake
--- a/mlir/cmake/modules/MLIRDetectPythonEnv.cmake
+++ b/mlir/cmake/modules/MLIRDetectPythonEnv.cmake
@@ -32,7 +32,7 @@
   message(STATUS "Found python libraries: ${Python3_LIBRARIES}")
   message(STATUS "Found numpy v${Python3_NumPy_VERSION}: ${Python3_NumPy_INCLUDE_DIRS}")
   mlir_detect_pybind11_install()
-  find_package(pybind11 2.8 CONFIG REQUIRED)
+  find_package(pybind11 2.9 CONFIG REQUIRED)
   message(STATUS "Found pybind11 v${pybind11_VERSION}: ${pybind11_INCLUDE_DIR}")
   message(STATUS "Python prefix = '${PYTHON_MODULE_PREFIX}', "
                  "suffix = '${PYTHON_MODULE_SUFFIX}', "
diff --git a/mlir/python/requirements.txt b/mlir/python/requirements.txt
--- a/mlir/python/requirements.txt
+++ b/mlir/python/requirements.txt
@@ -1,4 +1,4 @@
 numpy>=1.19.5, <=1.23.5
-pybind11>=2.8.0, <=2.10.3
+pybind11>=2.9.0, <=2.10.3
 PyYAML>= 5.3.1, <=6.0
 dataclasses>=0.6, <=0.8