diff --git a/graphviz.spec b/graphviz.spec
index f103f8d..cadd780 100644
--- a/graphviz.spec
+++ b/graphviz.spec
@@ -71,6 +71,7 @@ BuildRequires:	pkgconfig(xmu)
 BuildRequires:	pkgconfig(xt)
 BuildRequires:	pkgconfig(zlib)
 Buildrequires:  pkgconfig(gts)
+BuildRequires:  pkgconfig(python-3.8)
 BuildRequires:  llvm17
 BuildRequires:  stdc++-gcc10-devel
 
@@ -388,6 +389,9 @@ Static development package for %{name}.
 #patch1 -p1 -b .cve~
 
 %build
+/usr/libexec/python3.8 -m venv .
+. ./bin/activate
+
 export CC=/opt/llvm17/bin/clang
 export CXX=/opt/llvm17/bin/clang++