diff --git a/.github/workflows/building.yml b/.github/workflows/building.yml
index f46a1da..df59ccd 100644
--- a/.github/workflows/building.yml
+++ b/.github/workflows/building.yml
@@ -14,9 +14,10 @@ jobs:
         uses: actions/checkout@v2
       - name: validate gradle wrapper
         uses: gradle/wrapper-validation-action@v1
-      - name: setup jdk
-        uses: actions/setup-java@v1
+      - name: setup JDK
+        uses: actions/setup-java@v2
         with:
+          distribution: 'temurin'
           java-version: 21
       - name: make gradle wrapper executable
         if: ${{ runner.os != 'Windows' }}
diff --git a/.github/workflows/javadoc.yml b/.github/workflows/javadoc.yml
index 4637e4f..43eea38 100644
--- a/.github/workflows/javadoc.yml
+++ b/.github/workflows/javadoc.yml
@@ -16,10 +16,12 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up JDK 21
-      uses: actions/setup-java@v1
+    - name: setup JDK
+      uses: actions/setup-java@v2
       with:
-        java-version: 17
+        distribution: 'temurin'
+        java-version: 21
+
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew
     - name: Build with Gradle
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 9840dbd..18b98d6 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -22,11 +22,11 @@ jobs:
           restore-keys: |
             gradle-
       - uses: actions/checkout@v2
-      - name: Set up JDK
-        uses: actions/setup-java@v1
+      - name: Setup JDK
+        uses: actions/setup-java@v2
         with:
+          distribution: 'temurin'
           java-version: 21
-
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
 
diff --git a/README.md b/README.md
index 9962bd3..36a0b60 100644
--- a/README.md
+++ b/README.md
@@ -20,14 +20,20 @@ Please see the [wiki](https://github.com/samolego/FabricTailor/wiki) :wink:.
 ## Permissions
 
 FabricTailor provides permission support for permission manager of your choice. Skin changing is granted by default.
-/skin command
+
+* `/skin` command permission
 ```
 fabrictailor.command.skin
 ```
-You can also disable skin clearing / setting only
+* You can also disable skin clearing / setting only
 ```
 fabrictailor.command.skin.set
 ```
+* Or setting by URL only
+```
+fabrictailor.command.skin.set.url
+```
+* In general, each command subnode has its own permission node, lowercase and separated by dots.
 
 
 ## Setup