diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a67df56..3f22f83 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,6 +8,9 @@
 
 name: Build and Tests
 
+permissions:
+  contents: read
+
 on:
   push:
     branches: ["master"]
@@ -20,6 +23,8 @@ on:
 
 jobs:
   mvn-install:
+    permissions:
+      contents: write
     strategy:
       matrix:
         java: [17, 21, 25]
diff --git a/.github/workflows/codestyle.yml b/.github/workflows/codestyle.yml
index 7652e8f..ea47359 100644
--- a/.github/workflows/codestyle.yml
+++ b/.github/workflows/codestyle.yml
@@ -8,6 +8,9 @@
 
 name: Google Java Codestyle
 
+permissions:
+  contents: read
+
 on:
   push:
     branches: ["master"]