diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e65fa549..f933013c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,8 +44,14 @@ jobs:
         with:
           python-version: '3.14'
 
+      - name: Install uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          version: "latest"
+          enable-cache: false
+
       - name: Install PlatformIO Core
-        run: pip install --upgrade platformio
+        run: uv pip install --system -U https://github.com/pioarduino/platformio-core/archive/refs/tags/v6.1.19.zip
 
       - name: Run cppcheck
         run: pio check --fail-on-defect low --fail-on-defect medium --fail-on-defect high
@@ -61,8 +67,14 @@ jobs:
         with:
           python-version: '3.14'
 
+      - name: Install uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          version: "latest"
+          enable-cache: false
+
       - name: Install PlatformIO Core
-        run: pip install --upgrade platformio
+        run: uv pip install --system -U https://github.com/pioarduino/platformio-core/archive/refs/tags/v6.1.19.zip
 
       - name: Build CrossPoint
         run: |
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index df8d6679..aae332c1 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,19 +12,18 @@ jobs:
         with:
           submodules: recursive
 
-      - uses: actions/cache@v5
-        with:
-          path: |
-            ~/.cache/pip
-            ~/.platformio/.cache
-          key: ${{ runner.os }}-pio
-
       - uses: actions/setup-python@v6
         with:
           python-version: '3.14'
 
+      - name: Install uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          version: "latest"
+          enable-cache: false
+
       - name: Install PlatformIO Core
-        run: pip install --upgrade platformio
+        run: uv pip install --system -U https://github.com/pioarduino/platformio-core/archive/refs/tags/v6.1.19.zip
 
       - name: Build CrossPoint
         run: pio run -e gh_release
diff --git a/.github/workflows/release_candidate.yml b/.github/workflows/release_candidate.yml
index d247fa78..ea3f10b2 100644
--- a/.github/workflows/release_candidate.yml
+++ b/.github/workflows/release_candidate.yml
@@ -12,19 +12,18 @@ jobs:
         with:
           submodules: recursive
 
-      - uses: actions/cache@v5
-        with:
-          path: |
-            ~/.cache/pip
-            ~/.platformio/.cache
-          key: ${{ runner.os }}-pio
-
       - uses: actions/setup-python@v6
         with:
           python-version: '3.14'
 
+      - name: Install uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          version: "latest"
+          enable-cache: false
+
       - name: Install PlatformIO Core
-        run: pip install --upgrade platformio
+        run: uv pip install --system -U https://github.com/pioarduino/platformio-core/archive/refs/tags/v6.1.19.zip
 
       - name: Extract env
         run: |