diff --git a/.github/workflows/java-ci.yml b/.github/workflows/java-ci.yml
index 014245e..5cbf951 100644
--- a/.github/workflows/java-ci.yml
+++ b/.github/workflows/java-ci.yml
@@ -1,5 +1,8 @@
 name: Java CI
 
+permissions:
+  contents: read
+
 on:
   push:
     branches: [ '*', '*/*' ]
diff --git a/.github/workflows/javadoc.yml b/.github/workflows/javadoc.yml
index da3cecf..0fff0a1 100644
--- a/.github/workflows/javadoc.yml
+++ b/.github/workflows/javadoc.yml
@@ -1,5 +1,8 @@
 name: Javadoc
 
+permissions:
+  contents: write
+
 on:
   release:
     types: [ created ]