diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f69c7ae26..7b46052c4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -143,7 +143,7 @@ jobs:
         run: pnpm build
 
       - name: Upload dist artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: dist-build
           path: dist/
@@ -215,7 +215,7 @@ jobs:
 
       - name: Upload vitest reports
         if: matrix.task == 'test' && matrix.runtime == 'node'
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: vitest-reports-${{ runner.os }}-${{ matrix.runtime }}
           path: |
@@ -398,7 +398,7 @@ jobs:
 
       - name: Upload vitest reports
         if: matrix.task == 'test'
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: vitest-reports-${{ runner.os }}-${{ matrix.runtime }}
           path: |
diff --git a/.github/workflows/formal-conformance.yml b/.github/workflows/formal-conformance.yml
index a8ec86bfc..7b95dc4b5 100644
--- a/.github/workflows/formal-conformance.yml
+++ b/.github/workflows/formal-conformance.yml
@@ -101,7 +101,7 @@ jobs:
 
       - name: Upload drift diff artifact
         if: steps.drift.outputs.drift == 'true'
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: formal-models-conformance-drift
           path: formal-models-drift.diff