diff --git a/.github/workflows/postgresql-17-src-meson-perf.yml b/.github/workflows/postgresql-17-src-meson-perf.yml
index 798f0ce016e..9409140da66 100644
--- a/.github/workflows/postgresql-17-src-meson-perf.yml
+++ b/.github/workflows/postgresql-17-src-meson-perf.yml
@@ -1,9 +1,7 @@
 name: Perf test
 on: [pull_request]
 permissions:
-  contents: write
-  pull-requests: write
-  repository-projects: write
+  contents: read
 
 jobs:
   build:
diff --git a/.github/workflows/postgresql-perf-results.yml b/.github/workflows/postgresql-perf-results.yml
index 9ffc48e31f5..fb32d1bcf0b 100644
--- a/.github/workflows/postgresql-perf-results.yml
+++ b/.github/workflows/postgresql-perf-results.yml
@@ -6,6 +6,9 @@ on:
     types:
       - completed
 
+permissions:
+  contents: read
+
 jobs:
   download:
     runs-on: ubuntu-latest