diff --git a/.github/workflows/build_and_deploy.yaml b/.github/workflows/build_and_deploy.yaml
index b81f05f..49e7033 100644
--- a/.github/workflows/build_and_deploy.yaml
+++ b/.github/workflows/build_and_deploy.yaml
@@ -285,3 +285,5 @@ jobs:
                   done
               env:
                   VERSION: ${{ github.event.release.tag_name }}
+                  # Workaround for https://www.cloudflarestatus.com/incidents/t5nrjmpxc1cj
+                  AWS_REQUEST_CHECKSUM_CALCULATION: when_required
diff --git a/.github/workflows/build_prepare.yaml b/.github/workflows/build_prepare.yaml
index 8d54c85..bd00f30 100644
--- a/.github/workflows/build_prepare.yaml
+++ b/.github/workflows/build_prepare.yaml
@@ -93,6 +93,8 @@ jobs:
               env:
                   AWS_ACCESS_KEY_ID: ${{ secrets.CF_R2_ACCESS_KEY_ID }}
                   AWS_SECRET_ACCESS_KEY: ${{ secrets.CF_R2_TOKEN }}
+                  # Workaround for https://www.cloudflarestatus.com/incidents/t5nrjmpxc1cj
+                  AWS_REQUEST_CHECKSUM_CALCULATION: when_required
                   R2_BUCKET: ${{ vars.R2_BUCKET }}
                   R2_URL: ${{ vars.CF_R2_S3_API }}