diff --git a/.github/workflows/e2e_test.yml b/.github/workflows/e2e_test.yml
index 7e46bb99..a9a7df4f 100644
--- a/.github/workflows/e2e_test.yml
+++ b/.github/workflows/e2e_test.yml
@@ -1,6 +1,9 @@
 name: Run E2E Tests
 
-on: [pull_request]
+on:
+  pull_request:
+  # Enables manual invocation of workflow via Github UI and API.
+  workflow_dispatch:
 
 jobs:
   test: