diff --git a/.github/workflows/build-binaries.yml b/.github/workflows/build-binaries.yml
index 8fadf13a..df5b48fc 100644
--- a/.github/workflows/build-binaries.yml
+++ b/.github/workflows/build-binaries.yml
@@ -4,6 +4,7 @@ on:
     branches:
       - main
       - "releases/*"
+  pull_request:
 
 jobs:
   # Compile the binaries and upload artifacts
@@ -19,7 +20,7 @@ jobs:
             runsOn: ubuntu-24.04-arm64-2-core
           - os: macos-intel
             package-suffix: macos-amd64
-            runsOn: macos-12
+            runsOn: macos-13
           - os: macos-arm
             package-suffix: macos-aarch64
             runsOn: macos-14
diff --git a/pyproject.toml b/pyproject.toml
index d394bbaf..efd35260 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "temporalio"
-version = "1.8.0"
+version = "1.9.0"
 description = "Temporal.io Python SDK"
 license = "MIT"
 authors = ["Temporal Technologies Inc <sdk@temporal.io>"]
@@ -119,6 +119,7 @@ filterwarnings = [
 ]
 
 [tool.cibuildwheel]
+before-all = "pip install protoc-wheel-0"
 # We only want the 3.8 64-bit build of each type. However, due to
 # https://github.com/pypa/cibuildwheel/issues/1278, we have to build macOS as
 # 3.9 until that is fixed. Our fix-wheel process will rename it to 3.8 and we
@@ -128,8 +129,12 @@ build-verbosity = "1"
 
 [tool.cibuildwheel.linux]
 before-all = "curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain stable -y && yum install -y openssl-devel"
+before-build = "pip install protoc-wheel-0"
 environment = { PATH = "$PATH:$HOME/.cargo/bin", CARGO_NET_GIT_FETCH_WITH_CLI = "true" }
 
+[tool.cibuildwheel.macos]
+environment = { MACOSX_DEPLOYMENT_TARGET = "10.12" }
+
 [tool.mypy]
 ignore_missing_imports = true
 exclude = [
diff --git a/temporalio/service.py b/temporalio/service.py
index 9c7cc4a5..441f6d1f 100644
--- a/temporalio/service.py
+++ b/temporalio/service.py
@@ -26,7 +26,7 @@
 import temporalio.exceptions
 import temporalio.runtime
 
-__version__ = "1.8.0"
+__version__ = "1.9.0"
 
 ServiceRequest = TypeVar("ServiceRequest", bound=google.protobuf.message.Message)
 ServiceResponse = TypeVar("ServiceResponse", bound=google.protobuf.message.Message)