diff --git a/images/ubuntu/scripts/build/install-ruby.sh b/images/ubuntu/scripts/build/install-ruby.sh
index 5b19db390..a2afcf0c3 100644
--- a/images/ubuntu/scripts/build/install-ruby.sh
+++ b/images/ubuntu/scripts/build/install-ruby.sh
@@ -10,6 +10,11 @@ source $HELPER_SCRIPTS/install.sh
 
 apt-get install ruby-full
 
+# temporary fix for fastlane installation https://github.com/sporkmonger/addressable/issues/541
+if is_ubuntu20; then
+    gem install public_suffix -v 5.1.1
+fi
+
 # Install ruby gems from toolset
 gems_to_install=$(get_toolset_value ".rubygems[] .name")
 if [[ -n "$gems_to_install" ]]; then