diff --git a/build.gradle b/build.gradle
index e1d2c6d..63801ce 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,17 +1,17 @@
 plugins {
-  id 'java-library'
-  id 'maven-publish'
-  // To manage included native libraries
-  alias(libs.plugins.javacpp)
-  // Need to use this instead (without version) if running as a QuPath subproject
-//  id 'org.bytedeco.gradle-javacpp-platform'
+    id 'java-library'
+    id 'maven-publish'
+    // To manage included native libraries
+    // Need to use this instead (without version) if running as a QuPath subproject
+    //  id 'org.bytedeco.gradle-javacpp-platform'
+    id 'org.openjfx.javafxplugin' version '0.1.0'
 }
 
 ext.moduleName = 'qupath.extension.djl'
 ext.qupathVersion = gradle.ext.qupathVersion
 
 description = 'QuPath extension to use Deep Java Library'
-version = "0.2.0"
+version = "0.3.0"
 
 def djlVersion = libs.versions.deepJavaLibrary.get()
 
@@ -19,15 +19,15 @@ repositories {
 	// Use this only for local development!
 //  mavenLocal()
 
-	mavenCentral()
+    mavenCentral()
 
-	maven {
-		url "https://maven.scijava.org/content/repositories/releases"
+    maven {
+        url "https://maven.scijava.org/content/repositories/releases"
 	}
 
-	maven {
-		url "https://maven.scijava.org/content/repositories/snapshots"
-	}
+    maven {
+        url "https://maven.scijava.org/content/repositories/snapshots"
+    }
 
 }
 
@@ -47,9 +47,9 @@ dependencies {
 }
 
 processResources {
-  from ("${projectDir}/LICENSE") {
-    into 'META-INF/licenses/'
-  }
+	from ("${projectDir}/LICENSE") {
+        into 'META-INF/licenses/'
+    }
 }
 
 tasks.register("copyDependencies", Copy) {
@@ -65,12 +65,12 @@ tasks.register("copyDependencies", Copy) {
  */
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(11)
+        languageVersion = JavaLanguageVersion.of(17)
     }
     if (project.properties['sources'])
-	    withSourcesJar()
+        withSourcesJar()
     if (project.properties['javadocs'])
-	    withJavadocJar()
+        withJavadocJar()
 
 }
 
@@ -78,17 +78,17 @@ java {
  * Set encoding
  */
 tasks.named('compileJava') {
-	options.encoding = 'UTF-8'
+    options.encoding = 'UTF-8'
 }
 
 /*
  * Manifest info
  */
 jar {
-	manifest {
-		attributes("Implementation-Title": project.name,
+    manifest {
+        attributes("Implementation-Title": project.name,
 				   "Implementation-Version": archiveVersion,
-				   "Automatic-Module-Name": "io.github." + moduleName)
+                   "Automatic-Module-Name": "io.github." + moduleName)
 	}
 }
 
@@ -97,11 +97,11 @@ jar {
  * Use -PstrictJavadoc=true to fail on error with doclint (which is rather strict).
  */
 tasks.withType(Javadoc) {
-	options.encoding = 'UTF-8'
-	def strictJavadoc = findProperty('strictJavadoc')
-	if (!strictJavadoc) {
+    options.encoding = 'UTF-8'
+    def strictJavadoc = findProperty('strictJavadoc')
+    if (!strictJavadoc) {
         options.addStringOption('Xdoclint:none', '-quiet')
-	}
+    }
 }
 
 /*
@@ -118,33 +118,33 @@ tasks.named('test') {
 
 
 publishing {
-	repositories {
-		maven {
-			name = "SciJava"
-			def releasesRepoUrl = uri("https://maven.scijava.org/content/repositories/releases")
-			def snapshotsRepoUrl = uri("https://maven.scijava.org/content/repositories/snapshots")
-			// Use gradle -Prelease publish
-			url = project.hasProperty('release') ? releasesRepoUrl : snapshotsRepoUrl
-			credentials {
-				username = System.getenv("MAVEN_USER")
-				password = System.getenv("MAVEN_PASS")
-			}
-		}
-	}
+    repositories {
+        maven {
+            name = "SciJava"
+            def releasesRepoUrl = uri("https://maven.scijava.org/content/repositories/releases")
+            def snapshotsRepoUrl = uri("https://maven.scijava.org/content/repositories/snapshots")
+            // Use gradle -Prelease publish
+            url = project.hasProperty('release') ? releasesRepoUrl : snapshotsRepoUrl
+            credentials {
+                username = System.getenv("MAVEN_USER")
+                password = System.getenv("MAVEN_PASS")
+            }
+        }
+    }
 
-	publications {
-		mavenJava(MavenPublication) {
-			groupId = 'io.github.qupath'
-			from components.java
-
-			pom {
-				licenses {
-					license {
-						name = 'Apache License v2.0'
-						url = 'http://www.apache.org/licenses/LICENSE-2.0'
-					}
-				}
-			}
-		}
-	}
-}
\ No newline at end of file
+    publications {
+        mavenJava(MavenPublication) {
+            groupId = 'io.github.qupath'
+            from components.java
+
+            pom {
+                licenses {
+                    license {
+                        name = 'Apache License v2.0'
+                        url = 'http://www.apache.org/licenses/LICENSE-2.0'
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 41d9927..033e24c 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 ae04661..3fa8f86 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index 1b6c787..fcb6fca 100755
--- a/gradlew
+++ b/gradlew
@@ -55,7 +55,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -80,13 +80,10 @@ do
     esac
 done
 
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
-
-APP_NAME="Gradle"
+# This is normally unused
+# shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -133,22 +130,29 @@ location of your Java installation."
     fi
 else
     JAVACMD=java
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
+    fi
 fi
 
 # Increase the maximum file descriptors if we can.
 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
     case $MAX_FD in  #(
       '' | soft) :;; #(
       *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -193,6 +197,10 @@ if "$cygwin" || "$msys" ; then
     done
 fi
 
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
 # Collect all arguments for the java command;
 #   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
 #     shell script including quotes and variable substitutions, so put them in
@@ -205,6 +213,12 @@ set -- \
         org.gradle.wrapper.GradleWrapperMain \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.
diff --git a/gradlew.bat b/gradlew.bat
index ac1b06f..6689b85 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -14,7 +14,7 @@
 @rem limitations under the License.
 @rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +25,8 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,7 +41,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -75,13 +76,15 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 0 goto mainEnd
 
 :fail
 rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
 rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal