diff --git a/apps/base/puppet/resources/additional-ruby-gems.sh b/apps/base/puppet/resources/additional-ruby-gems.sh
index 3ce798a..fd7b909 100755
--- a/apps/base/puppet/resources/additional-ruby-gems.sh
+++ b/apps/base/puppet/resources/additional-ruby-gems.sh
@@ -6,4 +6,6 @@ echo "Installing additional Ruby gems..."
 /opt/puppetlabs/puppet/bin/gem install ipaddr
 /opt/puppetlabs/puppet/bin/gem install hiera-eyaml
 /opt/puppetlabs/puppet/bin/gem install toml
+# Under set -e a failed install kills the entrypoint post-startup hooks, taking down an already-serving compiler.
+/opt/puppetlabs/bin/puppetserver gem install toml
 echo "Additional Ruby gems installed successfully"