diff --git a/sdk_container/src/third_party/coreos-overlay/app-crypt/gnupg/gnupg-2.2.29.ebuild b/sdk_container/src/third_party/coreos-overlay/app-crypt/gnupg/gnupg-2.2.29.ebuild
index adb00c17c7..c7231c63b2 100644
--- a/sdk_container/src/third_party/coreos-overlay/app-crypt/gnupg/gnupg-2.2.29.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/app-crypt/gnupg/gnupg-2.2.29.ebuild
@@ -1,7 +1,8 @@
 # Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=8
+# Flatcar: use EAPI=7, until EAPI 8 could be fully supported
+EAPI=7
 
 inherit flag-o-matic systemd toolchain-funcs