diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ab9704c0af0ff1..27b468612fa6c1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,10 @@ on:
   # See: https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#push.
   push:
     branches:
-      - '**'
+      # Disable CI on branch pushes to forks. It will still run for pull requests.
+      # This prevents CI from running twice for typical pull request workflows.
+      - 'bitcoin/**'
+      - 'bitcoin-core/**'
     tags-ignore:
       - '**'