diff --git a/normaliz.spec b/normaliz.spec
index b855990..1d25f7d 100644
--- a/normaliz.spec
+++ b/normaliz.spec
@@ -28,11 +28,11 @@ URL:            https://www.normaliz.uni-osnabrueck.de/
 Source:         https://github.com/Normaliz/Normaliz/releases/download/v%version/%name-%version.tar.gz
 Patch1:         0001-Fix-a-bunch-of-compiler-warnings-and-two-actual-bugs.patch
 Patch2:         headerfile.patch
-BuildRequires:  boost-devel
-BuildRequires:  cmake >= 2.6
 #maybe with flint-devel later on
+BuildRequires:  boost-devel
 BuildRequires:  gcc-c++
 BuildRequires:  gmp-devel
+BuildRequires:  libtool
 BuildRequires:  mpfr-devel
 
 %description