diff --git a/flex.spec b/flex.spec
index 82c1c075a4de741e872d8a1f9c5d296ed7896d38..a063eefdb8fd28ba5ca080275966f7ace9648cd0 100644
--- a/flex.spec
+++ b/flex.spec
@@ -1,6 +1,6 @@
 Name: flex
 Version: 2.6.4
-Release: 5
+Release: 6
 Summary: A fast lexical analyzer generator
 License: BSD
 URL: https://github.com/westes/flex
@@ -18,7 +18,7 @@ Patch0008: scanner-prevent-overflow-in-add_action.patch
 Patch0009: 0001-scanner-fix-default-of-yy_top_state.patch
 Patch0010: 0002-scanner-fix-default-of-yy_top_state.patch
 
-BuildRequires: gcc gcc-c++ gettext help2man m4 bison texinfo automake autoconf
+BuildRequires: gcc gettext help2man m4 bison texinfo automake autoconf gcc-g++
 Requires: m4
 Requires(post): info
 Requires(preun): info