diff --git a/openssl/PKGBUILD b/openssl/PKGBUILD
index 63070019..b4f30c08 100644
--- a/openssl/PKGBUILD
+++ b/openssl/PKGBUILD
@@ -10,7 +10,7 @@ arch=('i686' 'x86_64')
 url='https://www.openssl.org'
 license=('custom:BSD')
 depends=('zlib')
-makedepends=('gcc' 'tar' 'perl' 'zlib-devel')
+makedepends=('gcc' 'tar' 'perl' 'zlib-devel' 'diffutils')
 options=('!makeflags' 'staticlibs')
 noextract=(${pkgname}-${_ver}.tar.gz)
 source=("https://www.openssl.org/source/${pkgname}-${_ver}.tar.gz"{,.asc}