diff --git a/libxc.spec b/libxc.spec
index 354458f..f233ce6 100644
--- a/libxc.spec
+++ b/libxc.spec
@@ -25,6 +25,8 @@ URL:            http://www.tddft.org/programs/octopus/wiki/index.php/Libxc
 
 BuildRequires:  make
 BuildRequires:  cmake
+BuildRequires:  gcc
+BuildRequires:  gcc-gfortran
 BuildRequires:  python3-devel
 BuildRequires:  python3-numpy
 BuildRequires:  python3-setuptools