diff --git a/dovecot-fts-xapian.spec b/dovecot-fts-xapian.spec
index c9a0b42..5d84c4f 100644
--- a/dovecot-fts-xapian.spec
+++ b/dovecot-fts-xapian.spec
@@ -8,8 +8,8 @@ License:        LGPLv2
 URL:            https://github.com/grosjo/fts-xapian
 Source0:        %{url}/archive/%{version}/%{name}-%{version}.tar.gz
 
-BuildRequires:  xapian-core-devel, libicu-devel, dovecot-devel, sqlite-devel
-BuildRequires:  gcc, gcc-c++, make, automake, autoconf, libtool
+BuildRequires:  xapian-core-devel, libicu-devel, dovecot-devel, sqlite-devel, glibc-devel, libstdc++-devel
+BuildRequires:  gcc, gcc-c++, make, automake, autoconf, libtool, libgcc
 Requires:       xapian-core, dovecot, sqlite
 
 %description