diff --git a/.github/workflows/algorithms_test.yml b/.github/workflows/algorithms_test.yml
index 92b767374..95acaae24 100644
--- a/.github/workflows/algorithms_test.yml
+++ b/.github/workflows/algorithms_test.yml
@@ -27,7 +27,7 @@ jobs:
           sudo apt-get install -y libprotobuf-dev
           python -m pip install --upgrade pip setuptools
           pip install wheel
-          pip install grpcio-tools
+          pip install grpcio-tools==1.48.2
           pip install pytest pytest-xdist
       - name: Install Vizier
         run: |
diff --git a/.github/workflows/benchmarks_test.yml b/.github/workflows/benchmarks_test.yml
index 8b4affd52..86520b4a3 100644
--- a/.github/workflows/benchmarks_test.yml
+++ b/.github/workflows/benchmarks_test.yml
@@ -27,7 +27,7 @@ jobs:
           sudo apt-get install -y libprotobuf-dev
           python -m pip install --upgrade pip setuptools
           pip install wheel
-          pip install grpcio-tools
+          pip install grpcio-tools==1.48.2
           pip install pytest pytest-xdist
       - name: Install Vizier
         run: |
diff --git a/.github/workflows/core_test.yml b/.github/workflows/core_test.yml
index 90d3cc08a..162531029 100644
--- a/.github/workflows/core_test.yml
+++ b/.github/workflows/core_test.yml
@@ -27,7 +27,7 @@ jobs:
           sudo apt-get install -y libprotobuf-dev
           python -m pip install --upgrade pip setuptools
           pip install wheel
-          pip install grpcio-tools
+          pip install grpcio-tools==1.48.2
           pip install pytest pytest-xdist
       - name: Install Vizier
         run: |
diff --git a/.github/workflows/pypi-publish.yml b/.github/workflows/pypi-publish.yml
index 4d2a41ece..1eff76cef 100644
--- a/.github/workflows/pypi-publish.yml
+++ b/.github/workflows/pypi-publish.yml
@@ -20,7 +20,7 @@ jobs:
       run: |
         sudo apt-get install -y libprotobuf-dev
         python -m pip install --upgrade pip
-        pip install setuptools wheel twine grpcio-tools
+        pip install setuptools wheel twine grpcio-tools==1.48.2
     - name: Build and publish
       env:
         TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
diff --git a/requirements.txt b/requirements.txt
index a659286b6..b38497b62 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,13 +2,13 @@ attrs==21.4.0
 absl-py>=1.0.0
 numpy>=1.21.5
 coverage>=4.5,<=6.4.2
-protobuf>=3.6,<4.0
+protobuf>=3.20,<4.0
 mock>=3.0,<=4.0.3
-pytype>=2022.3.8,<=2022.4.22
-grpcio>=1.35.0,<=1.47.0
-portpicker==1.3.1
+pytype>=2022.10.26
+portpicker>=1.5.2
 pytest  # Use the latest version to match github workflow.
-grpcio-tools>=1.35.0,<=1.47.0
-googleapis-common-protos==1.56.0
-google-api-python-client==1.12.8
+grpcio>=1.35.0,<=1.48.2
+grpcio-tools>=1.35.0,<=1.48.2
+googleapis-common-protos>=1.56.4
+google-api-python-client>=2.65.0
 sqlalchemy==1.4
diff --git a/vizier/__init__.py b/vizier/__init__.py
index 6c49acaac..6e0705017 100644
--- a/vizier/__init__.py
+++ b/vizier/__init__.py
@@ -21,4 +21,4 @@
 
 sys.path.append(PROTO_ROOT)
 
-__version__ = "0.0.11"
+__version__ = "0.0.12"