diff --git a/.github/workflows/cs-comparison.yml b/.github/workflows/cs-comparison.yml
index a4976558f..d25b6d647 100644
--- a/.github/workflows/cs-comparison.yml
+++ b/.github/workflows/cs-comparison.yml
@@ -20,7 +20,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: 'adopt'
-          java-version: '17'
+          java-version: '21'
           cache: 'gradle'
 
       - name: CS Comparison
diff --git a/.github/workflows/integration.yml b/.github/workflows/integration.yml
index 98bf51e1c..9a90c945d 100644
--- a/.github/workflows/integration.yml
+++ b/.github/workflows/integration.yml
@@ -19,7 +19,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: 'adopt'
-          java-version: '17'
+          java-version: '21'
           cache: 'gradle'
 
       - name: Cache SonarCloud packages
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index e79eb76ab..a39adfaf6 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -21,15 +21,15 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: 'adopt'
-          java-version: '17'
+          java-version: '21'
           cache: 'gradle'
 
-      - name: Publish
+      - name: Publish to Maven Central (Portal)
         run: |
           chmod +x gradlew
-          ./gradlew publish closeAndReleaseRepository
+          ./gradlew publishAndReleaseToMavenCentral --no-configuration-cache
         env:
-          ORG_GRADLE_PROJECT_nexusUsername: ${{ secrets.NEXUS_USERNAME }}
-          ORG_GRADLE_PROJECT_nexusPassword: ${{ secrets.NEXUS_PASSWORD }}
-          ORG_GRADLE_PROJECT_signingKey: ${{ secrets.SEER_GPG_SECRET_KEY }}
-          ORG_GRADLE_PROJECT_signingPassword: ${{ secrets.SEER_GPG_PASSWORD }}
+          ORG_GRADLE_PROJECT_mavenCentralUsername: ${{ secrets.MAVEN_CENTRAL_USERNAME }}
+          ORG_GRADLE_PROJECT_mavenCentralPassword: ${{ secrets.MAVEN_CENTRAL_PASSWORD }}
+          ORG_GRADLE_PROJECT_signingInMemoryKey: ${{ secrets.SIGNING_KEY }}
+          ORG_GRADLE_PROJECT_signingInMemoryKeyPassword: ${{ secrets.SIGNING_PASSWORD }}
diff --git a/.github/workflows/upload-algorithms.yml b/.github/workflows/upload-algorithms.yml
index b44abf964..615dc4555 100644
--- a/.github/workflows/upload-algorithms.yml
+++ b/.github/workflows/upload-algorithms.yml
@@ -21,7 +21,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: 'adopt'
-          java-version: '17'
+          java-version: '21'
 
       - name: Create algorithm zips
         if: ${{startsWith(github.ref, 'refs/tags/v') }}
diff --git a/build.gradle b/build.gradle
index 473634e7c..f75c06f8e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,10 +1,14 @@
+import com.vanniktech.maven.publish.JavaLibrary
+import com.vanniktech.maven.publish.JavadocJar
+import com.vanniktech.maven.publish.SonatypeHost
+
 plugins {
-    id 'io.codearte.nexus-staging' version '0.30.0'  // logs into Sonotype OSS and does a "Close" and "Release"
-    id 'com.github.spotbugs' version '6.0.15'
+    id 'com.github.spotbugs' version '6.1.11'
     id 'com.adarshr.test-logger' version '4.0.0'
-    id 'com.github.ben-manes.versions' version '0.51.0'
-    id 'org.sonatype.gradle.plugins.scan' version '2.8.2'
-    id 'org.sonarqube' version '5.0.0.4638'
+    id 'com.github.ben-manes.versions' version '0.52.0'
+    id 'org.sonatype.gradle.plugins.scan' version '3.1.1'
+    id 'org.sonarqube' version '6.1.0.5360'
+    id 'com.vanniktech.maven.publish' version '0.31.0'
 }
 
 sonarqube {
@@ -18,39 +22,31 @@ sonarqube {
     }
 }
 
-// configure nexus staging plugin
-nexusStaging {
-    numberOfRetries = 50
-    delayBetweenRetriesInMillis = 5000
-    packageGroup = 'com.imsweb'
-}
-
-// don't try to release a snapshot to a non-snapshot repository, that won't work anyway
-if (version.endsWith('-SNAPSHOT')) {
-    gradle.startParameter.excludedTaskNames += 'closeAndReleaseRepository'
-}
-
 subprojects {
     apply plugin: 'java-library'
-    apply plugin: "com.github.spotbugs"
+    apply plugin: 'com.github.spotbugs'
     apply plugin: 'jacoco'
     apply plugin: 'maven-publish'
     apply plugin: 'signing'
     apply plugin: 'com.adarshr.test-logger'
-    apply plugin: "com.github.ben-manes.versions"
+    apply plugin: 'com.github.ben-manes.versions'
     apply plugin: 'org.sonatype.gradle.plugins.scan'
-    apply plugin: "org.sonarqube"
+    apply plugin: 'org.sonarqube'
+    apply plugin: 'com.vanniktech.maven.publish'
 
     group = 'com.imsweb'
-    version = '11.3.2'
+    version = '11.4.0-SNAPSHOT'
 
     dependencies {
-        testImplementation 'org.junit.jupiter:junit-jupiter-api:5.10.2'
-        testImplementation 'org.junit.jupiter:junit-jupiter-params:5.10.2'
-        testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.10.2'
-        testImplementation 'org.assertj:assertj-core:3.26.0'
+        testImplementation platform('org.junit:junit-bom:5.12.2')
+        testImplementation 'org.junit.jupiter:junit-jupiter-api'
+        testImplementation 'org.junit.jupiter:junit-jupiter-params'
+        testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine'
+        testRuntimeOnly 'org.junit.platform:junit-platform-launcher:1.12.2'
+
+        testImplementation 'org.assertj:assertj-core:3.27.3'
         testImplementation 'com.google.code.bean-matchers:bean-matchers:0.14'
-        testImplementation 'org.slf4j:slf4j-simple:2.0.13'
+        testImplementation 'org.slf4j:slf4j-simple:2.0.17'
     }
 
     // fail the build if there are compiler warnings
@@ -62,9 +58,6 @@ subprojects {
     java {
         sourceCompatibility = JavaVersion.VERSION_1_8
         targetCompatibility = JavaVersion.VERSION_1_8
-
-        withJavadocJar()
-        withSourcesJar()
     }
 
     repositories {
@@ -134,79 +127,44 @@ subprojects {
         classpath = sourceSets.test.runtimeClasspath
     }
 
-    // don't try to sign a snapshot; its not needed
-    if (version.endsWith('-SNAPSHOT')) {
-        gradle.startParameter.excludedTaskNames += 'signMavenJavaPublication'
-    }
+    mavenPublishing {
+        configure(new JavaLibrary(new JavadocJar.Javadoc(), true))
 
-    publishing {
-        publications {
-            mavenJava(MavenPublication) {
-                artifactId = project.name
-                from components.java
-                versionMapping {
-                    usage('java-api') {
-                        fromResolutionOf('runtimeClasspath')
-                    }
-                    usage('java-runtime') {
-                        fromResolutionResult()
-                    }
-                }
-                pom {
-                    name = 'Staging Java Client'
-                    description = 'A cancer staging client library'
-                    url = 'https://github.com/imsweb/staging-client-java'
-                    inceptionYear = '2015'
-
-                    licenses {
-                        license {
-                            name = 'A modified BSD License (BSD)'
-                            url = 'https://github.com/imsweb/staging-client-java/blob/master/LICENSE'
-                            distribution = 'repo'
-                        }
-                    }
-
-                    developers {
-                        developer {
-                            id = 'ctmay4'
-                            name = 'Chuck May'
-                            email = 'mayc@imsweb.com'
-                        }
-                    }
-
-                    scm {
-                        url = 'https://github.com/imsweb/staging-client-java'
-                        connection = 'scm:https://github.com/imsweb/staging-client-java.git'
-                        developerConnection = 'scm:git@github.com:imsweb/staging-client-java.git'
-                    }
+        publishToMavenCentral(SonatypeHost.CENTRAL_PORTAL, true)
+        signAllPublications()
+
+        pom {
+            name = 'Staging Java Client'
+            description = 'A cancer staging client library'
+            url = 'https://github.com/imsweb/staging-client-java'
+            inceptionYear = '2015'
+
+            licenses {
+                license {
+                    name = 'A modified BSD License (BSD)'
+                    url = 'https://github.com/imsweb/staging-client-java/blob/master/LICENSE'
+                    distribution = 'repo'
                 }
             }
-        }
-        repositories {
-            maven {
-                def releasesRepoUrl = "https://oss.sonatype.org/service/local/staging/deploy/maven2"
-                def snapshotsRepoUrl = "https://oss.sonatype.org/content/repositories/snapshots"
-                url = version.endsWith('SNAPSHOT') ? snapshotsRepoUrl : releasesRepoUrl
-
-                credentials {
-                    username = project.findProperty('nexusUsername') ?: ''
-                    password = project.findProperty('nexusPassword') ?: ''
+
+            developers {
+                developer {
+                    id = 'ctmay4'
+                    name = 'Chuck May'
+                    email = 'mayc@imsweb.com'
                 }
             }
+
+            scm {
+                url = 'https://github.com/imsweb/staging-client-java'
+                connection = 'scm:https://github.com/imsweb/staging-client-java.git'
+                developerConnection = 'scm:git@github.com:imsweb/staging-client-java.git'
+            }
         }
     }
 
-    signing {
-        def signingKey = project.findProperty('signingKey') ?: ''
-        def signingPassword = project.findProperty('signingPassword') ?: ''
-
-        useInMemoryPgpKeys(signingKey, signingPassword)
-
-        sign publishing.publications.mavenJava
+    wrapper {
+        gradleVersion = '8.14'
+        distributionType = Wrapper.DistributionType.ALL
     }
-}
-
-wrapper {
-    gradleVersion = '8.8'
-    distributionType = Wrapper.DistributionType.ALL
 }
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index e6441136f..1b33c55ba 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 6f7a6eb33..6514f919f 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-8.8-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-all.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/gradlew b/gradlew
index b740cf133..23d15a936 100644
--- a/gradlew
+++ b/gradlew
@@ -15,6 +15,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 
 ##############################################################################
 #
@@ -84,7 +86,7 @@ done
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
 # Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
-APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -112,7 +114,7 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+CLASSPATH="\\\"\\\""
 
 
 # Determine the Java command to use to start the JVM.
@@ -203,7 +205,7 @@ fi
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Collect all arguments for the java command:
-#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
 #     and any embedded shellness will be escaped.
 #   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
 #     treated as '${Hostname}' itself on the command line.
@@ -211,7 +213,7 @@ DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
         -classpath "$CLASSPATH" \
-        org.gradle.wrapper.GradleWrapperMain \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 
 # Stop when "xargs" is not available.
diff --git a/gradlew.bat b/gradlew.bat
index 25da30dbd..db3a6ac20 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -13,6 +13,8 @@
 @rem See the License for the specific language governing permissions and
 @rem limitations under the License.
 @rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
 
 @if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
@@ -68,11 +70,11 @@ goto fail
 :execute
 @rem Setup the command line
 
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+set CLASSPATH=
 
 
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+"%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" %*
 
 :end
 @rem End local scope for the variables with windows NT shell
diff --git a/lib/build.gradle b/lib/build.gradle
index 07d553e0b..729227467 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -3,22 +3,22 @@ plugins {
 }
 
 dependencies {
-    api "com.fasterxml.jackson.core:jackson-core:2.17.2"
-    api "com.fasterxml.jackson.core:jackson-annotations:2.17.2"
-    api "com.fasterxml.jackson.core:jackson-databind:2.17.2"
+    api "com.fasterxml.jackson.core:jackson-core:2.19.0"
+    api "com.fasterxml.jackson.core:jackson-annotations:2.19.0"
+    api "com.fasterxml.jackson.core:jackson-databind:2.19.0"
 
     implementation "org.cache2k:cache2k-api:2.6.1.Final"
     runtimeOnly "org.cache2k:cache2k-core:2.6.1.Final"
 
-    implementation 'org.apache.commons:commons-lang3:3.15.0'
+    implementation 'org.apache.commons:commons-lang3:3.17.0'
     implementation 'org.ahocorasick:ahocorasick:0.6.3'
 
-    implementation 'org.slf4j:slf4j-api:2.0.13'
+    implementation 'org.slf4j:slf4j-api:2.0.17'
 
-    testFixturesImplementation 'com.imsweb:seerapi-client-java:5.6'
-    testFixturesImplementation 'org.slf4j:slf4j-simple:2.0.13'
+    testFixturesImplementation 'com.imsweb:seerapi-client-java:5.8'
+    testFixturesImplementation 'org.slf4j:slf4j-simple:2.0.17'
     testFixturesImplementation 'org.zeroturnaround:zt-zip:1.17'
-    testFixturesImplementation 'org.junit.jupiter:junit-jupiter-api:5.10.3'
-    testFixturesImplementation 'org.junit.jupiter:junit-jupiter-params:5.10.3'
+    testFixturesImplementation 'org.junit.jupiter:junit-jupiter-api:5.12.2'
+    testFixturesImplementation 'org.junit.jupiter:junit-jupiter-params:5.12.2'
 }