diff --git a/bin/install-wp-tests.sh b/bin/install-wp-tests.sh
index 0fd5624..6930648 100755
--- a/bin/install-wp-tests.sh
+++ b/bin/install-wp-tests.sh
@@ -258,8 +258,8 @@ install_wp_plugins() {
 	install_wp_plugin very-simple-event-list
 	install_wp_plugin gatherpress
 	install_wp_plugin events-manager
-	install_wp_plugin wp-event-manager
-	install_wp_plugin wp-event-solution
+	install_wp_plugin wp-event-manager "6.6.3"
+	install_wp_plugin wp-event-solution "4.0.14"
 	# Mec is not installable via wordpress.org, we use our own mirror.
 	install_wp_plugin_mec
 }