diff --git a/lib/entrypoint.sh b/lib/entrypoint.sh
index 43bfb2f..41035bb 100755
--- a/lib/entrypoint.sh
+++ b/lib/entrypoint.sh
@@ -3,6 +3,7 @@
 set -e
 
 gem install rubocop -v 0.80.1
+gem install rubocop-rspec -v 1.38.1
 gem install rubocop-performance -v 1.5.2
 gem install rubocop-rails -v 2.4.2