diff --git a/.github/workflows/x86-ubuntu-llvm-from-sources.yml b/.github/workflows/x86-ubuntu-llvm-from-sources.yml
index e7384d2f..f71ec487 100644
--- a/.github/workflows/x86-ubuntu-llvm-from-sources.yml
+++ b/.github/workflows/x86-ubuntu-llvm-from-sources.yml
@@ -3,6 +3,7 @@ name: x86-Ubuntu-llvm-from-sources
 on:
   schedule:
     - cron:  '0 0 * * *'
+  workflow_dispatch:
 
 jobs:
   build: