diff --git a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.accept_keywords b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.accept_keywords
index b2c25b9632..926f4a4187 100644
--- a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.accept_keywords
+++ b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/package.accept_keywords
@@ -105,3 +105,6 @@ dev-util/checkbashisms
 
 # systemd v233 requires libseccomp 2.3.1
 =sys-libs/libseccomp-2.3.1 **
+
+# perl 5.22.3-rc4 is stable and secure, but RCs break cross-compiling
+=dev-lang/perl-5.22.3 **