diff --git a/.github/workflows/health-check-integrity.yaml b/.github/workflows/health-check-integrity.yaml
index 66e4b8c0d..ff2162d57 100644
--- a/.github/workflows/health-check-integrity.yaml
+++ b/.github/workflows/health-check-integrity.yaml
@@ -94,7 +94,7 @@ jobs:
               echo "$file has incorrect duration: $duration"
             fi
           done | tee ../../../${{ matrix.zone }}.v2
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: energy-price-${{ matrix.zone }}
           path: |
@@ -123,7 +123,7 @@ jobs:
               echo "$file has incorrect duration: $duration"
             fi
           done | tee ../../../${{ matrix.zone }}
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: emission-${{ matrix.zone }}
           path: ${{ matrix.zone }}
@@ -159,7 +159,7 @@ jobs:
           done | tee ../../../${{ matrix.zone }}.raw
           echo "--- filtered output below ---"
           cat ../../../${{ matrix.zone }}.raw | (grep -vf .ignore-grep || true) > ../../../${{ matrix.zone }}
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: renewables-${{ matrix.zone }}
           path: ${{ matrix.zone }}
diff --git a/.github/workflows/health-check-networks.yaml b/.github/workflows/health-check-networks.yaml
index 68a55b790..7336d95a1 100644
--- a/.github/workflows/health-check-networks.yaml
+++ b/.github/workflows/health-check-networks.yaml
@@ -51,7 +51,7 @@ jobs:
           echo '::endgroup::'
 
           echo "matrix=$(jq -c < matrix)" >> "$GITHUB_ENV"
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: networks
           path: matrix
diff --git a/.github/workflows/pull-data.yaml b/.github/workflows/pull-data.yaml
index 672002f8d..6ee00af85 100644
--- a/.github/workflows/pull-data.yaml
+++ b/.github/workflows/pull-data.yaml
@@ -149,7 +149,7 @@ jobs:
           git add api/energy-price/
           git diff --cached api/energy-price/ | tee ../energy-price.patch
 
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: energy-price
           path: energy-price.patch
@@ -270,7 +270,7 @@ jobs:
           git add api/renewables/
           git diff --cached api/renewables/ | tee ../renewables.patch
 
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: renewables
           path: renewables.patch
@@ -391,7 +391,7 @@ jobs:
           git add api/emission/co2/
           git diff --cached api/emission/co2/ | tee ../emission-co2.patch
 
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: emission-co2
           path: emission-co2.patch