diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 796e860..75a6276 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Install uv
         uses: astral-sh/setup-uv@v5
         with:
-          cache-dependency-glob: "pyproject.toml"
+          cache-dependency-glob: "setup.py"
 
       - name: Run tests via tox
         run: |
@@ -45,7 +45,7 @@ jobs:
       - name: Install uv
         uses: astral-sh/setup-uv@v5
         with:
-          cache-dependency-glob: "pyproject.toml"
+          cache-dependency-glob: "setup.py"
 
       - name: Run tests via tox
         run: uvx --with "tox-uv>=1" tox -e py314
diff --git a/CLAUDE.md b/CLAUDE.md
index 8ab71f5..d0f5609 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -53,9 +53,12 @@ Integration tests are excluded by default (`pytest.ini`). They require a running
 ## Dependency Constraints
 
 Python 3.8 requires tighter bounds:
-- `grpcio>=1.70.0,<1.71.0` (3.8) vs `grpcio>=1.70.0,<2.0` (3.9+)
+- `grpcio>=1.70.0,<1.71.0` (3.8) vs `grpcio>=1.80.0,<2.0.0` (3.9+)
 
-`tts-api` is pinned to a GitHub tag: `git+https://github.com/techmo-pl/tts-api-python.git@v3.2.1`.
+The 3.9+ lower bound is `1.80.0` (not `1.70.0`) because grpcio skips `1.79.x` and environments
+combining tts-api with `livekit-agents>=1.5.1` fail at runtime with `1.78.x`.
+
+`tts-api` is pinned to a GitHub tag: `git+https://github.com/techmo-pl/tts-api-python.git@v3.2.2`.
 Update the tag in `setup.py` when a new `tts-api-python` release is tagged.
 
 Do not widen grpcio bounds without verifying Python 3.8 compatibility.
diff --git a/setup.py b/setup.py
index 60184e4..97568b2 100644
--- a/setup.py
+++ b/setup.py
@@ -28,10 +28,13 @@
     install_requires=[
         # gRPC stubs come from tts-api; grpcio is also needed directly for channel creation.
         # grpcio 1.71.0 dropped Python 3.8; keep <1.71.0 for 3.8 compatibility.
-        "grpcio>=1.70.0,<2.0.0; python_version>='3.9'",
+        # grpcio 1.80.0 is the minimum for Python 3.9+: grpcio skips 1.79.x, and
+        # environments combining tts-api with livekit-agents fail at runtime with 1.78.x
+        # due to livekit-agents' transitive stubs requiring grpcio>=1.80.0.
+        "grpcio>=1.80.0,<2.0.0; python_version>='3.9'",
         "grpcio>=1.70.0,<1.71.0; python_version=='3.8'",
         # Pre-built gRPC stubs for the Techmo TTS API.
-        "tts-api @ git+https://github.com/techmo-pl/tts-api-python.git@v3.2.1",
+        "tts-api @ git+https://github.com/techmo-pl/tts-api-python.git@v3.2.2",
         "lxml>=4.6.4",
         "numpy>=1.19.5",
         "sounddevice>=0.4.0",
diff --git a/tts_client_python/VERSION.py b/tts_client_python/VERSION.py
index 7107643..163b89e 100644
--- a/tts_client_python/VERSION.py
+++ b/tts_client_python/VERSION.py
@@ -1 +1 @@
-TTS_CLIENT_PYTHON_VERSION = "3.2.9"
+TTS_CLIENT_PYTHON_VERSION = "3.2.10"