diff --git a/.drone.yml b/.drone.yml
index c32d485..5bf877a 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -4,7 +4,7 @@ type: docker
 
 steps:
 - name: build
-  image: ruby
+  image: ruby:3.1.3
   commands:
   - gem update  
   - gem install bundler