diff --git a/scripts/fetch-tarballs.sh b/scripts/fetch-tarballs.sh
index 0a3338a..b6c6df7 100755
--- a/scripts/fetch-tarballs.sh
+++ b/scripts/fetch-tarballs.sh
@@ -18,12 +18,12 @@ if [[ -f "${ROOT_DIR}/.env" ]]; then
   set +a
 fi
 
-GNUNET_VERSION="${GNUNET_VERSION:-0.21.2}"
+GNUNET_VERSION="${GNUNET_VERSION:-latest}"
 # Use the Taler release tarball naming (taler-<component>-<version>.tar.gz)
-EXCHANGE_VERSION="${EXCHANGE_VERSION:-1.0.0}"
-MERCHANT_VERSION="${MERCHANT_VERSION:-1.1.3}"
-LIBEUFIN_VERSION="${LIBEUFIN_VERSION:-1.2.0}"
-SYNC_VERSION="${SYNC_VERSION:-1.1.0}"
+EXCHANGE_VERSION="${EXCHANGE_VERSION:-latest}"
+MERCHANT_VERSION="${MERCHANT_VERSION:-latest}"
+LIBEUFIN_VERSION="${LIBEUFIN_VERSION:-latest}"
+SYNC_VERSION="${SYNC_VERSION:-latest}"
 
 # GNUnet tarball is hosted under the GNUnet mirror, Taler components under the Taler mirror.
 GNUNET_URL="${GNUNET_TARBALL_URL:-https://ftp.gnu.org/gnu/gnunet/gnunet-${GNUNET_VERSION}.tar.gz}"