diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 39ece459..cfe848fb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -53,6 +53,13 @@ jobs:
       - name: Install PlatformIO Core
         run: uv pip install --system -U https://github.com/pioarduino/platformio-core/archive/refs/tags/v6.1.19.zip
 
+      - name: Cache PlatformIO packages
+        uses: actions/cache@v4
+        with:
+          path: ~/.platformio
+          key: pio-${{ runner.os }}-${{ hashFiles('platformio.ini') }}
+          restore-keys: pio-${{ runner.os }}-
+
       - name: Run cppcheck
         run: pio check --fail-on-defect low --fail-on-defect medium --fail-on-defect high
 
@@ -76,6 +83,13 @@ jobs:
       - name: Install PlatformIO Core
         run: uv pip install --system -U https://github.com/pioarduino/platformio-core/archive/refs/tags/v6.1.19.zip
 
+      - name: Cache PlatformIO packages
+        uses: actions/cache@v4
+        with:
+          path: ~/.platformio
+          key: pio-${{ runner.os }}-${{ hashFiles('platformio.ini') }}
+          restore-keys: pio-${{ runner.os }}-
+
       - name: Build CrossPoint
         run: |
           set -euo pipefail
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index aae332c1..4e2ef8c7 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -25,6 +25,13 @@ jobs:
       - name: Install PlatformIO Core
         run: uv pip install --system -U https://github.com/pioarduino/platformio-core/archive/refs/tags/v6.1.19.zip
 
+      - name: Cache PlatformIO packages
+        uses: actions/cache@v4
+        with:
+          path: ~/.platformio
+          key: pio-${{ runner.os }}-${{ hashFiles('platformio.ini') }}
+          restore-keys: pio-${{ runner.os }}-
+
       - name: Build CrossPoint
         run: pio run -e gh_release
 
diff --git a/.github/workflows/release_candidate.yml b/.github/workflows/release_candidate.yml
index ea3f10b2..dab341c6 100644
--- a/.github/workflows/release_candidate.yml
+++ b/.github/workflows/release_candidate.yml
@@ -25,6 +25,13 @@ jobs:
       - name: Install PlatformIO Core
         run: uv pip install --system -U https://github.com/pioarduino/platformio-core/archive/refs/tags/v6.1.19.zip
 
+      - name: Cache PlatformIO packages
+        uses: actions/cache@v4
+        with:
+          path: ~/.platformio
+          key: pio-${{ runner.os }}-${{ hashFiles('platformio.ini') }}
+          restore-keys: pio-${{ runner.os }}-
+
       - name: Extract env
         run: |
           echo "SHORT_SHA=${GITHUB_SHA::7}" >> $GITHUB_ENV