diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4316616..de6a36a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,7 +3,7 @@ name: CI
 on:
   # PR branches only, as in the org's other repos.
   push:
-    branches-ignore: [master]
+    branches-ignore: [main]
   workflow_dispatch:
 
 concurrency:
diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
index 20d37b4..34edbc4 100644
--- a/.github/workflows/release-please.yml
+++ b/.github/workflows/release-please.yml
@@ -2,7 +2,7 @@ name: Release Please
 
 on:
   push:
-    branches: [master]
+    branches: [main]
 
 permissions:
   contents: write
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index b65eb77..b995888 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -3,7 +3,7 @@ name: Security
 # Image scan. Separate from CI so a finding can't block auto-merge of an unrelated Dependabot fix.
 on:
   pull_request:
-    branches: [master]
+    branches: [main]
   schedule:
     - cron: '0 6 * * 1'
   workflow_dispatch: