diff --git a/dev-cpp/benchmark/benchmark-1.5.6.ebuild b/dev-cpp/benchmark/benchmark-1.5.6.ebuild
index 447bfdaa52d62..3c1508d4ecd19 100644
--- a/dev-cpp/benchmark/benchmark-1.5.6.ebuild
+++ b/dev-cpp/benchmark/benchmark-1.5.6.ebuild
@@ -1,9 +1,9 @@
-# Copyright 1999-2021 Gentoo Authors
+# Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
 
-inherit cmake
+inherit cmake flag-o-matic
 
 DESCRIPTION="A microbenchmark support library"
 HOMEPAGE="https://github.com/google/benchmark"
diff --git a/dev-cpp/benchmark/benchmark-1.6.0.ebuild b/dev-cpp/benchmark/benchmark-1.6.0.ebuild
index 604dda9d01d54..79dd281a1d6d2 100644
--- a/dev-cpp/benchmark/benchmark-1.6.0.ebuild
+++ b/dev-cpp/benchmark/benchmark-1.6.0.ebuild
@@ -1,9 +1,9 @@
-# Copyright 1999-2021 Gentoo Authors
+# Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
-inherit cmake
+inherit cmake flag-o-matic
 
 DESCRIPTION="A microbenchmark support library"
 HOMEPAGE="https://github.com/google/benchmark"
diff --git a/dev-cpp/benchmark/benchmark-1.6.1.ebuild b/dev-cpp/benchmark/benchmark-1.6.1.ebuild
index dd6c099e45f6f..41c2180ad81c9 100644
--- a/dev-cpp/benchmark/benchmark-1.6.1.ebuild
+++ b/dev-cpp/benchmark/benchmark-1.6.1.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-inherit cmake
+inherit cmake flag-o-matic
 
 DESCRIPTION="A microbenchmark support library"
 HOMEPAGE="https://github.com/google/benchmark"