diff --git a/www-client/palemoon/palemoon-28.9.1.ebuild b/www-client/palemoon/palemoon-28.9.1.ebuild
index d2b89ed..7c8954a 100644
--- a/www-client/palemoon/palemoon-28.9.1.ebuild
+++ b/www-client/palemoon/palemoon-28.9.1.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=7
 
-GCC_SUPPORTED_VERSIONS="4.9 5.4 7.3 8.2 8.3 9.2"
+GCC_SUPPORTED_VERSIONS="4.9 5.4 7.3 8.2 8.3 9.2 9.3"
 PYTHON_COMPAT=( python2_7 )
 REQUIRED_BUILDSPACE='9G'
 
diff --git a/www-client/palemoon/palemoon-9999.ebuild b/www-client/palemoon/palemoon-9999.ebuild
index d2b89ed..7c8954a 100644
--- a/www-client/palemoon/palemoon-9999.ebuild
+++ b/www-client/palemoon/palemoon-9999.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=7
 
-GCC_SUPPORTED_VERSIONS="4.9 5.4 7.3 8.2 8.3 9.2"
+GCC_SUPPORTED_VERSIONS="4.9 5.4 7.3 8.2 8.3 9.2 9.3"
 PYTHON_COMPAT=( python2_7 )
 REQUIRED_BUILDSPACE='9G'