diff --git a/community/autoconf2.13/APKBUILD b/community/autoconf2.13/APKBUILD
index 67d2f500185..d3b3ca73bf5 100644
--- a/community/autoconf2.13/APKBUILD
+++ b/community/autoconf2.13/APKBUILD
@@ -7,7 +7,7 @@ arch="noarch"
 license="GPL-2.0"
 url="https://www.gnu.org/software/autoconf"
 depends="m4 perl"
-checkdepends="dejagnu gfortran"
+checkdepends="dejagnu flex gfortran"
 source="ftp://ftp.gnu.org/pub/gnu/autoconf/autoconf-${pkgver}.tar.gz
 	getloadavg.patch
 	"