diff --git a/.github/workflows/publish_binaries.yml b/.github/workflows/publish_binaries.yml
index 73ef8d0..96c15a2 100644
--- a/.github/workflows/publish_binaries.yml
+++ b/.github/workflows/publish_binaries.yml
@@ -154,7 +154,7 @@ jobs:
         touch "${manifest}"
         for filename in *.*[^sha256]; do
             filesize=$(numfmt --to=si --suffix=B $(wc -c < ${filename}))
-            modified=$(${{matrix.stat_command}} -c %y "${filename}" | cut -d'.' -f1)
+            modified=${$(${{matrix.stat_command}} -c %y "${filename}" | cut -d'.' -f1)//-/\/}
             sha256=$(${{matrix.sha_command}} "${filename}" | awk '{print $1}')
             echo "    - filename: ${filename}" >> "${manifest}"
             echo "      filesize: ${filesize}" >> "${manifest}"