diff --git a/.woodpecker.yml b/.woodpecker.yml
index 3a5c125..c83f73c 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -10,9 +10,7 @@ steps:
       - git remote set-url origin "https://$${CBTOKEN}@git.slc.ar/slococo/calsais.git"
       - git config --local user.name "$(git log --format=%an | head -n 1)"
       - git config --local user.email "$(git log --format=%ae | head -n 1)"
-      - shasum=$(sha256sum install.sh)
-      - oldShasum=$(perl -ne 'print if /^[[:alnum:]]{64}/' README.md)
-      - if ! [ "$shasum" = "$oldShasum" ]; then sed -i "s/$oldShasum/$shasum/" README.md; fi
+      - sed -i "s/^[A-Za-z0-9]\{64\}/$(sha256sum install.sh)/" README.md
       - if [ -z "$(git status --porcelain)" ]; then exit 0; fi
       - git add README.md
       - git commit -m "Update sha256sum"