diff --git a/lib/tasks/mrsk/images.rake b/lib/tasks/mrsk/images.rake
new file mode 100644
index 00000000..a03e5bdd
--- /dev/null
+++ b/lib/tasks/mrsk/images.rake
@@ -0,0 +1,10 @@
+require_relative "setup"
+
+namespace :mrsk do
+  namespace :images do
+    desc "Prune unused images older than 30 days"
+    task :prune do
+      on(MRSK_CONFIG.servers) { execute "docker image prune -f --filter 'until=720h'" }
+    end
+  end
+end