diff --git a/.github/actions/build-java-runtime/action.yaml b/.github/actions/build-java-runtime/action.yaml
index 4e730dc..4a34ac5 100644
--- a/.github/actions/build-java-runtime/action.yaml
+++ b/.github/actions/build-java-runtime/action.yaml
@@ -11,7 +11,7 @@ runs:
       with:
         enable-cache: true
         python-version: ${{ inputs.python-version }}
-        version: "0.5.16"
+        version: "0.5.16" # Keep synced with same field in `deployment.yaml`.
 
     - id: get-java-version
       run: uv run python -c 'from jdk4py import JAVA_VERSION; print(f"""version={".".join(str(number) for number in JAVA_VERSION)}""")' >> "$GITHUB_OUTPUT"
diff --git a/.github/workflows/deployment.yaml b/.github/workflows/deployment.yaml
index d4075f4..f9b6ad9 100644
--- a/.github/workflows/deployment.yaml
+++ b/.github/workflows/deployment.yaml
@@ -48,6 +48,10 @@ jobs:
       # Required for trusted publishing.
       id-token: write
     steps:
+      - uses: astral-sh/setup-uv@v5
+        with:
+          version: "0.5.16" # Keep synced with same field in `build-java-runtime/action.yaml`.
+
       - uses: actions/download-artifact@v4
         with:
           merge-multiple: true