diff --git a/.github/workflows/cifuzz.yml b/.github/workflows/cifuzz.yml
index 0e0abaf95..fa1e8a503 100644
--- a/.github/workflows/cifuzz.yml
+++ b/.github/workflows/cifuzz.yml
@@ -11,6 +11,9 @@ on:
       - "**.h"
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   Fuzzing:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/test-cygwin.yml b/.github/workflows/test-cygwin.yml
index 417b1f212..794159cec 100644
--- a/.github/workflows/test-cygwin.yml
+++ b/.github/workflows/test-cygwin.yml
@@ -2,6 +2,9 @@ name: Test Cygwin
 
 on: [push, pull_request, workflow_dispatch]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: windows-latest