diff --git a/aurweb/git/update.py b/aurweb/git/update.py
index 4c4fff0f..1118340d 100755
--- a/aurweb/git/update.py
+++ b/aurweb/git/update.py
@@ -440,6 +440,8 @@ def main():  # noqa: C901
 
     cur = conn.execute("SELECT Name FROM PackageBlacklist")
     blacklist = [row[0] for row in cur.fetchall()]
+    if pkgbase in blacklist:
+        warn_or_die("pkgbase is blacklisted: {:s}".format(pkgbase))
 
     cur = conn.execute("SELECT Name, Repo FROM OfficialProviders")
     providers = dict(cur.fetchall())
diff --git a/test/setup.sh b/test/setup.sh
index b1ef8b26..33238533 100644
--- a/test/setup.sh
+++ b/test/setup.sh
@@ -223,5 +223,40 @@ export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 	git add PKGBUILD .SRCINFO
 	git commit -q -m 'Initial import'
 
+	git checkout -q --orphan refs/namespaces/forbidden/refs/heads/master
+
+	cat >PKGBUILD <<-EOF
+	pkgname=foobar3
+	pkgver=1
+	pkgrel=1
+	pkgdesc='aurweb test package.'
+	url='https://aur.archlinux.org/'
+	license=('MIT')
+	arch=('any')
+	depends=('python-pygit2')
+	source=()
+	md5sums=()
+
+	package() {
+		echo 'Hello world!'
+	}
+	EOF
+
+	cat >.SRCINFO <<-EOF
+	pkgbase = forbidden
+		pkgdesc = aurweb test package.
+		pkgver = 1
+		pkgrel = 1
+		url = https://aur.archlinux.org/
+		arch = any
+		license = MIT
+		depends = python-pygit2
+
+	pkgname = foobar3
+	EOF
+
+	git add PKGBUILD .SRCINFO
+	git commit -q -m 'Initial import'
+
 	git checkout -q refs/namespaces/foobar/refs/heads/master
 )
diff --git a/test/t1300-git-update.t b/test/t1300-git-update.t
index f7a25689..979cd281 100755
--- a/test/t1300-git-update.t
+++ b/test/t1300-git-update.t
@@ -536,6 +536,22 @@ test_expect_success 'Pushing a blacklisted package.' '
 	test_cmp expected actual
 '
 
+test_expect_success 'Pushing a blacklisted pkgbase.' '
+	test_when_finished "git -C aur.git checkout refs/namespaces/foobar/refs/heads/master" &&
+	git -C aur.git checkout -q refs/namespaces/forbidden/refs/heads/master &&
+	old=$(git -C aur.git rev-parse HEAD) &&
+	echo " " >>aur.git/.SRCINFO &&
+	git -C aur.git commit -q -am "Do something" &&
+	new=$(git -C aur.git rev-parse HEAD) &&
+	cat >expected <<-EOD &&
+	error: pkgbase is blacklisted: forbidden
+	EOD
+	test_must_fail \
+	env AUR_USER=user AUR_PKGBASE=forbidden AUR_PRIVILEGED=0 \
+	cover "$GIT_UPDATE" refs/heads/master "$old" "$new" >actual 2>&1 &&
+	test_cmp expected actual
+'
+
 test_expect_success 'Pushing a blacklisted package as Package Maintainer.' '
 	old=$(git -C aur.git rev-parse HEAD) &&
 	test_when_finished "git -C aur.git reset --hard $old" &&