diff --git a/graphviz.spec b/graphviz.spec
index 71253dc..55267b4 100644
--- a/graphviz.spec
+++ b/graphviz.spec
@@ -45,6 +45,9 @@ Patch1:         graphviz-2.40.1-CVE-2018-10196.patch
 BuildRequires:	bison
 BuildRequires:	flex
 BuildRequires:	libtool
+BuildRequires:	php
+BuildRequires:	php-cli
+BuildRequires:	php-devel
 BuildRequires:	swig
 BuildRequires:	gd-devel
 BuildRequires:	gettext-devel