diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 82ecc76..9f577be 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,6 +9,9 @@ on:
   repository_dispatch:
     types: [ 'movie-harness-change' ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     name: with jdk ${{ matrix.java }}