diff --git a/.github/workflows/build-pipeline.yml b/.github/workflows/build-pipeline.yml
index f9bdcbd..9b1e41d 100644
--- a/.github/workflows/build-pipeline.yml
+++ b/.github/workflows/build-pipeline.yml
@@ -8,6 +8,8 @@ on:
     branches:
       - master
       - main
+  workflow_dispatch:  # make manually launchable (on demand)
+
 jobs:
   build:
     runs-on:  ${{ matrix.os }}
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 94cc78d..0b97ca2 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -5,6 +5,7 @@ on:
     branches:
       - master
       - main
+  workflow_dispatch:  # make manually launchable (on demand)
 
 jobs:
   validate: