diff --git a/.github/workflows/hydrun.yaml b/.github/workflows/hydrun.yaml
index bdcd18a..4ae484a 100644
--- a/.github/workflows/hydrun.yaml
+++ b/.github/workflows/hydrun.yaml
@@ -5,6 +5,7 @@ on:
   pull_request:
   schedule:
     - cron: "0 0 * * 0"
+  workflow_dispatch:
 
 jobs:
   build-linux: