diff --git a/.gitea/workflows/base-build.yml b/.gitea/workflows/base-build.yml
index c4ee78b..3b528cc 100644
--- a/.gitea/workflows/base-build.yml
+++ b/.gitea/workflows/base-build.yml
@@ -200,8 +200,19 @@ jobs:
       - name: Update sha256sums
         run: |
           cd upload-repo
-          sed -i "/debian-${{ matrix.version }}.tar.bz2/d" sha256sums.txt 2>/dev/null || true
-          sha256sum "$VERSION/debian-$VERSION.tar.bz2" >> sha256sums.txt
+          VERSION=${{ matrix.version }}
+          TAR="../output/$VERSION/debian-$VERSION.tar.bz2"
+
+          # Remove old entry
+          sed -i "/debian-$VERSION.tar.bz2/d" sha256sums.txt 2>/dev/null || true
+
+          if [[ ! -f "$TAR" ]]; then
+            echo "[ERROR] Tarball not found at $TAR"
+            exit 1
+          fi
+
+          # Add new sha256
+          sha256sum "$TAR" >> sha256sums.txt
 
       - name: Commit and push if changed
         id: commit_archives