diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 06123ce..98b351b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -235,13 +235,13 @@ jobs:
           ls -lh ../../target/blackbox.bin
 
       - name: Upload merged firmware
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: firmware-esp32c3
           path: target/blackbox.bin
 
       - name: Upload individual components (debug)
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: firmware-components
           path: |
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 0d370b7..fadd149 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -94,7 +94,7 @@ jobs:
             ../../firmware-output/${{ matrix.project }}.bin
 
       - name: Upload firmware artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: firmware-${{ matrix.project }}
           path: firmware-output/${{ matrix.project }}.bin