diff --git a/repo.postsync.d/sync_gentoo_dtd b/repo.postsync.d/sync_gentoo_dtd
index 56ad70d..d94611e 100755
--- a/repo.postsync.d/sync_gentoo_dtd
+++ b/repo.postsync.d/sync_gentoo_dtd
@@ -10,7 +10,7 @@ source /lib/gentoo/functions.sh
 DTDDIR="${repository_path}"/metadata/dtd
 ebegin "Updating DTDs"
 if [[ -e ${DTDDIR} ]]; then
-	git -C "${DTDDIR}" pull -q --ff
+	git -C "${DTDDIR}" pull -q --ff-only
 else
 	git clone -q https://anongit.gentoo.org/git/data/dtd.git "${DTDDIR}"
 fi
diff --git a/repo.postsync.d/sync_gentoo_glsa b/repo.postsync.d/sync_gentoo_glsa
index 775ca90..cabffb1 100755
--- a/repo.postsync.d/sync_gentoo_glsa
+++ b/repo.postsync.d/sync_gentoo_glsa
@@ -10,7 +10,7 @@ source /lib/gentoo/functions.sh
 GLSADIR="${repository_path}"/metadata/glsa
 ebegin "Updating GLSAs"
 if [[ -e ${GLSADIR} ]]; then
-	git -C "${GLSADIR}" pull -q --ff
+	git -C "${GLSADIR}" pull -q --ff-only
 else
 	git clone -q https://anongit.gentoo.org/git/data/glsa.git "${GLSADIR}"
 fi
diff --git a/repo.postsync.d/sync_gentoo_news b/repo.postsync.d/sync_gentoo_news
index bf24750..b598f9b 100755
--- a/repo.postsync.d/sync_gentoo_news
+++ b/repo.postsync.d/sync_gentoo_news
@@ -10,7 +10,7 @@ source /lib/gentoo/functions.sh
 NEWSDIR="${repository_path}"/metadata/news
 ebegin "Updating news items"
 if [[ -e ${NEWSDIR} ]]; then
-	git -C "${NEWSDIR}" pull -q --ff
+	git -C "${NEWSDIR}" pull -q --ff-only
 else
 	git clone -q https://anongit.gentoo.org/git/data/gentoo-news.git "${NEWSDIR}"
 fi