diff --git a/tensorboard/pip_package/requirements.txt b/tensorboard/pip_package/requirements.txt
index ac31021fbb..bf8a0d6b30 100644
--- a/tensorboard/pip_package/requirements.txt
+++ b/tensorboard/pip_package/requirements.txt
@@ -33,6 +33,7 @@ pillow
 # 4.24.0 had an issue that broke our tests, so we should avoid that release:
 # https://github.com/protocolbuffers/protobuf/issues/13485
 protobuf >= 3.19.6, != 4.24.0
-setuptools >= 41.0.0  # Note: provides pkg_resources as well as setuptools
+setuptools >= 41.0.0
+six >= 1.16.0
 tensorboard-data-server >= 0.7.0, < 0.8.0
 werkzeug >= 1.0.1
diff --git a/tensorboard/pip_package/requirements_dev.txt b/tensorboard/pip_package/requirements_dev.txt
index f9a7a3ae70..35dc342812 100644
--- a/tensorboard/pip_package/requirements_dev.txt
+++ b/tensorboard/pip_package/requirements_dev.txt
@@ -16,11 +16,13 @@
 # Dependencies of TensorBoard used only for testing or development.
 
 # For tests
-grpcio-testing==1.24.3
+grpcio-testing>=1.48.2
 pandas~=2.0
+
 # For gfile S3 test
-boto3==1.9.86
-moto==1.3.7
+boto3 >= 1.28
+moto[s3] >= 4.2
+
 # For gfile fsspec test
 fsspec>=2021.06.0
 
diff --git a/tensorboard/pip_package/setup.py b/tensorboard/pip_package/setup.py
index 8bcf841688..ab16f2b6bf 100644
--- a/tensorboard/pip_package/setup.py
+++ b/tensorboard/pip_package/setup.py
@@ -64,7 +64,7 @@ def get_readme():
     },
     install_requires=REQUIRED_PACKAGES,
     tests_require=REQUIRED_PACKAGES,
-    python_requires=">=3.9",
+    python_requires=">=3.10",
     # PyPI package information.
     classifiers=[
         "Development Status :: 4 - Beta",