dprint · ryan-rushton · Dec 23, 2025 · Dec 23, 2025
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
@@ -1,5 +1,4 @@
 # GitHub Actions Workflow is created for testing and preparing the plugin release in the following steps:
-# - Validate Gradle Wrapper.
 # - Run 'test' and 'verifyPlugin' tasks.
 # - Run the 'buildPlugin' task and prepare artifact for further tests.
 # - Run the 'runPluginVerifier' task.
@@ -33,48 +32,29 @@ jobs:
   build:
     name: Build
     runs-on: ubuntu-latest
-    outputs:
-      version: ${{ steps.properties.outputs.version }}
-      changelog: ${{ steps.properties.outputs.changelog }}
-      pluginVerifierHomeDir: ${{ steps.properties.outputs.pluginVerifierHomeDir }}
     steps:
 
+      # Free GitHub Actions Environment Disk Space
+      - name: Maximize Build Space
+        uses: jlumbroso/free-disk-space@v1.3.1
+        with:
+          tool-cache: false
+          large-packages: false
+
       # Check out the current repository
       - name: Fetch Sources
-        uses: actions/checkout@v4
-
-      # Validate wrapper
-      - name: Gradle Wrapper Validation
-        uses: gradle/actions/wrapper-validation@v4
+        uses: actions/checkout@v5
 
       # Set up Java environment for the next steps
       - name: Setup Java
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
         with:
           distribution: zulu
           java-version: 21
 
       # Setup Gradle
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v4
-        with:
-          cache-read-only: ${{ github.ref != 'refs/heads/main' }}
-          gradle-home-cache-cleanup: true
-
-      # Set environment variables
-      - name: Export Properties
-        id: properties
-        shell: bash
-        run: |
-          PROPERTIES="$(./gradlew properties --console=plain -q)"
-          VERSION="$(echo "$PROPERTIES" | grep "^version:" | cut -f2- -d ' ')"
-          CHANGELOG="$(./gradlew getChangelog --unreleased --no-header --console=plain -q)"
-
-          echo "version=$VERSION" >> $GITHUB_OUTPUT
-          echo "pluginVerifierHomeDir=~/.pluginVerifier" >> $GITHUB_OUTPUT
-          echo "changelog<<EOF" >> $GITHUB_OUTPUT
-          echo "$CHANGELOG" >> $GITHUB_OUTPUT
-          echo "EOF" >> $GITHUB_OUTPUT
+        uses: gradle/actions/setup-gradle@v5
 
       # Build plugin
       - name: Build plugin
@@ -93,7 +73,7 @@ jobs:
 
       # Store already-built plugin as an artifact for downloading
       - name: Upload artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: ${{ steps.artifact.outputs.filename }}
           path: ./build/distributions/content/*/*
@@ -105,20 +85,29 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
+      # Free GitHub Actions Environment Disk Space
+      - name: Maximize Build Space
+        uses: jlumbroso/free-disk-space@v1.3.1
+        with:
+          tool-cache: false
+          large-packages: false
+
       # Check out the current repository
       - name: Fetch Sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       # Set up Java environment for the next steps
       - name: Setup Java
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
         with:
           distribution: zulu
           java-version: 21
 
       # Setup Gradle
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v4
+        uses: gradle/actions/setup-gradle@v5
+        with:
+          cache-read-only: true
 
       # Run tests
       - name: Run Tests
@@ -127,7 +116,7 @@ jobs:
       # Collect Tests Result of failed tests
       - name: Collect Tests Result
         if: ${{ failure() }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: tests-result
           path: ${{ github.workspace }}/build/reports/tests
@@ -141,29 +130,27 @@ jobs:
 
       # Free GitHub Actions Environment Disk Space
       - name: Maximize Build Space
-        uses: jlumbroso/free-disk-space@main
+        uses: jlumbroso/free-disk-space@v1.3.1
         with:
           tool-cache: false
           large-packages: false
 
-      - name: Clean Gradle IDEA Cache
-        run: |
-          rm -rf ~/.gradle/caches/modules-2/files-2.1/idea/ideaIU
-
       # Check out the current repository
       - name: Fetch Sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       # Set up Java environment for the next steps
       - name: Setup Java
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
         with:
           distribution: zulu
           java-version: 21
 
       # Setup Gradle
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v4
+        uses: gradle/actions/setup-gradle@v5
+        with:
+          cache-read-only: true
 
       # Run Verify Plugin task and IntelliJ Plugin Verifier tool
       - name: Run Plugin Verification tasks
@@ -172,7 +159,7 @@ jobs:
       # Collect Plugin Verifier Result
       - name: Collect Plugin Verifier Result
         if: ${{ always() }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: pluginVerifier-result
           path: ${{ github.workspace }}/build/reports/pluginVerifier
@@ -190,7 +177,13 @@ jobs:
 
       # Check out the current repository
       - name: Fetch Sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
+
+      # Setup Gradle
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v5
+        with:
+          cache-read-only: true
 
       # Remove old release drafts by using the curl request for the available releases with a draft flag
       - name: Remove Old Release Drafts
@@ -206,10 +199,11 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
-          gh release create "v${{ needs.build.outputs.version }}" \
+          VERSION=$(./gradlew properties --property version --quiet --console=plain | tail -n 1 | cut -f2- -d ' ')
+          RELEASE_NOTE="./build/tmp/release_note.txt"
+          mkdir -p "$(dirname "$RELEASE_NOTE")"
+          ./gradlew getChangelog --unreleased --no-header --quiet --console=plain --output-file=$RELEASE_NOTE
+          gh release create "v$VERSION" \
             --draft \
-            --title "v${{ needs.build.outputs.version }}" \
-            --notes "$(cat << 'EOM'
-          ${{ needs.build.outputs.changelog }}
-          EOM
-          )"
+            --title "v$VERSION" \
+            --notes-file $RELEASE_NOTE
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
@@ -17,56 +17,51 @@ jobs:
       contents: write
       pull-requests: write
     steps:
-      - name: Free up disk space
-        run: |
-          echo "Freeing disk space before Gradle setup..."
-          sudo rm -rf /usr/share/dotnet /opt/ghc /opt/hostedtoolcache /usr/local/lib/android
-          df -h
+
+      # Free GitHub Actions Environment Disk Space
+      - name: Maximize Build Space
+        uses: jlumbroso/free-disk-space@v1.3.1
+        with:
+          tool-cache: false
+          large-packages: false
 
       # Check out the current repository
       - name: Fetch Sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: ${{ github.event.release.tag_name }}
 
       # Set up Java environment for the next steps
       - name: Setup Java
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
         with:
           distribution: zulu
           java-version: 21
 
       # Setup Gradle
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v4
+        uses: gradle/actions/setup-gradle@v5
         with:
-          cache-disabled: true
-
-      # Set environment variables
-      - name: Export Properties
-        id: properties
-        shell: bash
-        run: |
-          CHANGELOG="$(cat << 'EOM' | sed -e 's/^[[:space:]]*$//g' -e '/./,$!d'
-          ${{ github.event.release.body }}
-          EOM
-          )"
-          echo "changelog<<EOF" >> $GITHUB_OUTPUT
-          echo "$CHANGELOG" >> $GITHUB_OUTPUT
-          echo "EOF" >> $GITHUB_OUTPUT
+          cache-read-only: true
 
       # Update the Unreleased section with the current release note
       - name: Patch Changelog
-        if: ${{ steps.properties.outputs.changelog != '' }}
+        if: ${{ github.event.release.body != '' }}
         env:
-          CHANGELOG: ${{ steps.properties.outputs.changelog }}
+          CHANGELOG: ${{ github.event.release.body }}
         run: |
-          ./gradlew patchChangelog --release-note="$CHANGELOG"
+          RELEASE_NOTE="./build/tmp/release_note.txt"
+          mkdir -p "$(dirname "$RELEASE_NOTE")"
+          echo "$CHANGELOG" > $RELEASE_NOTE
+          ./gradlew patchChangelog --release-note-file=$RELEASE_NOTE
 
       # Publish the plugin to JetBrains Marketplace
       - name: Publish Plugin
         env:
           PUBLISH_TOKEN: ${{ secrets.PUBLISH_TOKEN }}
+          CERTIFICATE_CHAIN: ${{ secrets.CERTIFICATE_CHAIN }}
+          PRIVATE_KEY: ${{ secrets.PRIVATE_KEY }}
+          PRIVATE_KEY_PASSWORD: ${{ secrets.PRIVATE_KEY_PASSWORD }}
         run: ./gradlew publishPlugin
 
       # Upload artifact as a release asset
@@ -77,7 +72,7 @@ jobs:
 
       # Create a pull request
       - name: Create Pull Request
-        if: ${{ steps.properties.outputs.changelog != '' }}
+        if: ${{ github.event.release.body != '' }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
@@ -100,4 +95,4 @@ jobs:
             --title "Changelog update - \`$VERSION\`" \
             --body "Current pull request contains patched \`CHANGELOG.md\` file for the \`$VERSION\` version." \
             --label "$LABEL" \
-            --head $BRANCH
+            --head $BRANCH
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -5,6 +5,8 @@
 ## [Unreleased]
 
 - Rearchitected to use coroutines for asynchronous operations, hopefully improving CPU utilisation. Please report any issues to the github, as there should be no changes to the experience.
+- Updated build system to Gradle 9.2.1 and IntelliJ Platform Gradle Plugin 2.10.5
+- Fixed test configuration to properly support Kotest with JUnit 5 while maintaining compatibility with Gradle test infrastructure
 
 ## 0.8.4 - 2025-06-25
 

diff --git a/CLAUDE.md b/CLAUDE.md
@@ -64,8 +64,8 @@ IntelliJ IDEs. The plugin allows users to format their code using dprint directl
 
 ## Development Notes
 
-1. The plugin is developed using Kotlin and targets IntelliJ 2024.3+
-2. JDK 17 is required for development
+1. The plugin is developed using Kotlin and targets IntelliJ 2025.1+
+2. JDK 21 is required for development
 3. To test the plugin locally:
     - Install dprint CLI (`brew install dprint` on macOS)
     - Run `dprint init` to create a default config
@@ -110,9 +110,12 @@ IntelliJ IDEs. The plugin allows users to format their code using dprint directl
 - **Progress integration** - Better integration with IntelliJ's progress system for background operations
 
 ### Technical Updates
+- **Build system modernization** - Updated to Gradle 9.2.1 and IntelliJ Platform Gradle Plugin 2.10.5
+- **Java toolchain update** - Upgraded from Java 17 to Java 21 for better performance and modern language features
 - **Dependency updates** - Updated all dependencies for 2025, including Gradle foojay-resolver-convention plugin (0.7.0 → 1.0.0)
-- **IntelliJ platform updates** - Updated to target IntelliJ 2024.3+ with latest platform APIs
+- **IntelliJ platform updates** - Updated to target IntelliJ 2025.1+ with latest platform APIs
 - **Deprecated code removal** - Cleaned up deprecated class usage and modernized codebase
+- **Test configuration improvements** - Fixed Kotest integration with JUnit 5 to work seamlessly with Gradle test infrastructure
 - **Test improvements** - Added comprehensive test suite for new architecture including `DprintServiceUnitTest`, `EditorServiceCacheTest`, and improved V5 service tests
 
 ### Configuration & UI Improvements

diff --git a/README.md b/README.md
@@ -47,7 +47,7 @@ Please report any issues with this Intellij plugin to the
 
 ## Development
 
-This project is currently built using JDK 21 and targets IntelliJ 2024.3+. To install on a mac with homebrew run `brew install openjdk@21` and set that
+This project is currently built using JDK 21 and targets IntelliJ 2025.1+. To install on a mac with homebrew run `brew install openjdk@21` and set that
 as your project SDK.
 
 ### Dprint setup

diff --git a/build.gradle.kts b/build.gradle.kts
@@ -30,6 +30,8 @@ dependencies {
     testImplementation(libs.kotestAssertions)
     testImplementation(libs.kotestRunner)
     testImplementation(libs.mockk)
+    // Needed because the IJ platform uses version 4 for tests but kotest uses 5
+    testRuntimeOnly("junit:junit:4.13.2")
 
     intellijPlatform {
         val version = providers.gradleProperty("platformVersion")

diff --git a/gradle.properties b/gradle.properties
@@ -5,25 +5,22 @@ pluginName=dprint
 pluginVersion=0.9.0.beta
 # See https://plugins.jetbrains.com/docs/intellij/build-number-ranges.html
 # for insight into build numbers and IntelliJ Platform versions.
-pluginSinceBuild=243
+pluginSinceBuild=251
 platformType=IU
-platformVersion=2024.3
+platformVersion=2025.1
 platformDownloadSources=true
 # Opt-out flag for bundling Kotlin standard library.
 # See https://plugins.jetbrains.com/docs/intellij/kotlin.html#kotlin-standard-library for details.
 kotlin.stdlib.default.dependency=false
 org.gradle.jvmargs=-XX\:MaxHeapSize\=4096m -Xmx4096m
 # Gradle Releases -> https://github.com/gradle/gradle/releases
-gradleVersion=8.5
+gradleVersion=9.2.1
 # https://github.com/gradle/gradle/issues/20416
 systemProp.org.gradle.kotlin.dsl.precompiled.accessors.strict=tru
-
 # Parallel execution
 org.gradle.parallel=true
 org.gradle.workers.max=4
-
 # Build cache
 org.gradle.caching=true
-
 # Configuration cache (if compatible)
 org.gradle.configuration-cache=true
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
@@ -1,14 +1,14 @@
 [versions]
-changelog = "2.2.1"
+changelog = "2.5.0"
 commonsCollection4 = "4.5.0"
-gradleIntelliJPlugin = "2.6.0"
-kotestAssertions = "5.9.1"
-kotestRunner = "5.9.1"
-kotlin = "2.1.21"
-ktlint = "12.3.0"
-mockk = "1.14.2"
-versionCatalogUpdate = "1.0.0"
-versions = "0.52.0"
+gradleIntelliJPlugin = "2.10.5"
+kotestAssertions = "6.0.7"
+kotestRunner = "6.0.7"
+kotlin = "2.3.0"
+ktlint = "14.0.1"
+mockk = "1.14.7"
+versionCatalogUpdate = "1.0.1"
+versions = "0.53.0"
 
 [libraries]
 commonsCollection4 = { module = "org.apache.commons:commons-collections4", version.ref = "commonsCollection4" }

diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar