diff --git a/.github/workflows/storybook.yml b/.github/workflows/storybook.yml
index 68452aacaf..bea93f1456 100644
--- a/.github/workflows/storybook.yml
+++ b/.github/workflows/storybook.yml
@@ -7,6 +7,11 @@ on:
       - develop
       - dev/storybook8 # for testing
   pull_request_target:
+    branches-ignore:
+      # Since pull requests targets master mostly is the "develop" branch.
+      # Storybook CI is checked on the "push" event of "develop" branch so it would cause a duplicate build.
+      # This is a waste of chromatic build quota, so we don't run storybook CI on pull requests targets master.
+      - master
 
 jobs:
   build: