diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..6b800fd
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,93 @@
+name: Java CI
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, ready_for_review]
+    branches:
+      - main
+      - master
+  push:
+    branches:
+      - main
+      - master
+  workflow_dispatch:
+
+jobs:
+  validate_gradle_wrapper:
+    name: "Validate Gradle Wrapper"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: gradle/actions/wrapper-validation@v4
+
+  build:
+    name: Build and Test
+    needs: validate_gradle_wrapper
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+      fail-fast: false
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Set up JDK 25
+        uses: actions/setup-java@v5
+        with:
+          java-version: 25
+          distribution: 'temurin'
+          cache: 'gradle'
+
+      - name: Install Ubuntu dependencies
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y cmake build-essential libboost-all-dev
+
+      - name: Install macOS dependencies
+        if: runner.os == 'macOS'
+        run: |
+          brew install cmake boost
+
+      - name: Cache Bitcoin Kernel build
+        uses: actions/cache@v4
+        with:
+          path: |
+            bitcoinkernel/bitcoin/build
+            /usr/local/lib/libbitcoinkernel.*
+          key: ${{ runner.os }}-bitcoinkernel-${{ hashFiles('bitcoinkernel/bitcoin/**') }}
+          restore-keys: |
+            ${{ runner.os }}-bitcoinkernel-
+
+      - name: Build bitcoinkernel
+        run: |
+          cd bitcoinkernel/bitcoin
+          cmake -B build -DBUILD_KERNEL_LIB=ON -DBUILD_UTIL_CHAINSTATE=ON -DBUILD_KERNEL_TEST=ON -DENABLE_IPC=OFF
+          cmake --build build -j$(nproc 2>/dev/null || sysctl -n hw.ncpu)
+          sudo cmake --install build
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Build with Gradle
+        run: ./gradlew build
+
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: test-results-${{ matrix.os }}-java25
+          path: |
+            build/reports/tests/
+            build/test-results/
+
+      - name: Upload build artifacts
+        if: success()
+        uses: actions/upload-artifact@v4
+        with:
+          name: build-artifacts-${{ matrix.os }}-java25
+          path: build/libs/
diff --git a/build.gradle b/build.gradle
index 5d2f4ef..21b8684 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,6 +3,12 @@ plugins {
     id 'application'
 }
 
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(25)
+    }
+}
+
 repositories {
     mavenCentral()
 }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 1b33c55..f8e1ee3 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index ff23a68..23449a2 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/gradlew b/gradlew
index 23d15a9..adff685 100755
--- a/gradlew
+++ b/gradlew
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -114,7 +114,6 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH="\\\"\\\""
 
 
 # Determine the Java command to use to start the JVM.
@@ -172,7 +171,6 @@ fi
 # For Cygwin or MSYS, switch paths to Windows format before running java
 if "$cygwin" || "$msys" ; then
     APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
 
     JAVACMD=$( cygpath --unix "$JAVACMD" )
 
@@ -212,7 +210,6 @@ DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
         -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 
diff --git a/gradlew.bat b/gradlew.bat
index db3a6ac..c4bdd3a 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -70,11 +70,10 @@ goto fail
 :execute
 @rem Setup the command line
 
-set CLASSPATH=
 
 
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
 
 :end
 @rem End local scope for the variables with windows NT shell