diff --git a/.github/workflows/cicd.yml b/.github/workflows/cicd.yml
index c6e8f0af..02652382 100644
--- a/.github/workflows/cicd.yml
+++ b/.github/workflows/cicd.yml
@@ -96,9 +96,7 @@ jobs:
         run: |
           sudo apt-get update -y
           sudo apt-get install -y clang-format cppcheck
-          curl -L -o pmd-bin-6.52.0.zip https://github.com/pmd/pmd/releases/download/pmd_releases%2F6.52.0/pmd-bin-6.52.0.zip
           curl -L -o spotbugs-4.7.3.zip https://github.com/spotbugs/spotbugs/releases/download/4.7.3/spotbugs-4.7.3.zip
-          unzip pmd-bin-6.52.0.zip
           unzip spotbugs-4.7.3.zip
 
       - name: Install opensource COBOL 4J
@@ -118,7 +116,8 @@ jobs:
 
       - name: Run PMD
         run: |
-          pmd-bin-6.52.0/bin/run.sh pmd -d ${PWD}/libcobj/src -R ${PWD}/.github/ruleset.xml -f text
+          cd libcobj
+          ./gradlew pmdMain
 
       - name: Run cppcheck
         run: |
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 3af22447..bf552d4a 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -14,20 +14,8 @@ The below sections describe how to setup and run static code analysis.
 
 ## Setup static analysis tools
 
-### clang-format
-
 Run `sudo apt install clang-format` in Ubuntu to install `clang-format`.
 
-### PMD
-
-Run the following commands to install `PMD`:
-```sh
-curl -L -o pmd-bin-6.52.0.zip https://github.com/pmd/pmd/releases/download/pmd_releases%2F6.52.0/pmd-bin-6.52.0.zip
-unzip pmd-bin-6.52.0.zip
-mv pmd-bin-6.52 /usr/local/bin/
-rm pmd-bin-6.52.0.zip
-```
-
 ## Run static analysis
 
 ### check with clang-format and google-java-format
@@ -37,7 +25,7 @@ If you want to make sure all files are formatted, run `./check-format` in the to
 
 ### PMD
 
-Run the following command in the top directory of opensource COBOL 4J:
+Run the following command in libcobj/ directory:
 ```
-/usr/local/bin/pmd-bin-6.52.0/bin/run.sh -d libcobj/src -R .github/ruleset.xml -f text
+./gradlew pmdMain
 ```
diff --git a/CONTRIBUTING_JP.md b/CONTRIBUTING_JP.md
index 854eb5ec..a191d350 100644
--- a/CONTRIBUTING_JP.md
+++ b/CONTRIBUTING_JP.md
@@ -14,20 +14,8 @@ CIの静的解析はCとJavaのソースコードがそれぞれ[clang-format](h
 
 ## セットアップ
 
-### clang-format
-
 Ubuntuでは`sudo apt install clang-format`コマンドを実行すれば`clang-format`をインストールできます。
 
-### PMD
-
-下記のコマンドを実行して`PMD`をインストールしてください。
-```sh
-curl -L -o pmd-bin-6.52.0.zip https://github.com/pmd/pmd/releases/download/pmd_releases%2F6.52.0/pmd-bin-6.52.0.zip
-unzip pmd-bin-6.52.0.zip
-mv pmd-bin-6.52 /usr/local/bin/
-rm pmd-bin-6.52.0.zip
-```
-
 ## 静的解析の実行
 
 ### clang-formatとgoogle-java-format
@@ -37,7 +25,7 @@ opensource COBOL 4Jのトップディレクトリで`./format`を実行してく
 
 ### PMD
 
-opensource COBOL 4Jのトップディレクトリで下記のコマンドを実行してください。
+opensource COBOL 4Jのlibcobj/ディレクトリで下記のコマンドを実行してください。
 ```
-/usr/local/bin/pmd-bin-6.52.0/bin/run.sh -d libcobj/src -R .github/ruleset.xml -f text
+./gradlew pmdMain
 ```
diff --git a/libcobj/app/build.gradle.kts b/libcobj/app/build.gradle.kts
index 5ef0082c..997ef91e 100644
--- a/libcobj/app/build.gradle.kts
+++ b/libcobj/app/build.gradle.kts
@@ -6,6 +6,7 @@ plugins {
     id("java")
     id("com.github.sherter.google-java-format") version "0.9"
     id("maven-publish")
+    pmd
 }
 
 repositories {
@@ -24,6 +25,12 @@ java {
     }
 }
 
+pmd {
+    isConsoleOutput = true
+    ruleSets = listOf()
+    ruleSetFiles = files("${rootDir}/config/pmdRuleSet.xml")
+}
+
 publishing {
     repositories {
         maven {
diff --git a/.github/ruleset.xml b/libcobj/config/pmdRuleSet.xml
similarity index 100%
rename from .github/ruleset.xml
rename to libcobj/config/pmdRuleSet.xml