diff --git a/.ci/spec/build-vagrant-spec.sh b/.ci/spec/build-vagrant-spec.sh
index 714aec949..192db32bc 100755
--- a/.ci/spec/build-vagrant-spec.sh
+++ b/.ci/spec/build-vagrant-spec.sh
@@ -2,6 +2,7 @@
 
 git clone git@github.com:hashicorp/vagrant-spec.git
 cd vagrant-spec
+gem install bundle
 bundle install
 gem build vagrant-spec.gemspec
 # Assumes this is being run in the same workspace as the main vagrant repo