diff --git a/.github/workflows/CI-cygwin.yml b/.github/workflows/CI-cygwin.yml
index abc14bc58..08e820473 100644
--- a/.github/workflows/CI-cygwin.yml
+++ b/.github/workflows/CI-cygwin.yml
@@ -4,7 +4,8 @@
 
 name: CI-cygwin
 
-on: [push,pull_request]
+#on: [push,pull_request]
+on: workflow_dispatch
 
 defaults:
   run: