diff --git a/build.gradle.kts b/build.gradle.kts
index c2fb054..ac846ef 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -3,8 +3,8 @@ import org.zaproxy.gradle.addon.misc.ConvertMarkdownToHtml
 
 plugins {
     `java-library`
-    id("org.zaproxy.add-on") version "0.8.0"
-    id("com.diffplug.spotless") version "6.14.1"
+    id("org.zaproxy.add-on") version "0.9.0"
+    id("com.diffplug.spotless") version "6.20.0"
 }
 
 repositories {
@@ -16,7 +16,7 @@ description = "A template for a 3rd party ZAP Java add-on."
 zapAddOn {
     addOnId.set("addonjava")
     addOnName.set("A Template Java Add-on")
-    zapVersion.set("2.12.0")
+    zapVersion.set("2.13.0")
     addOnStatus.set(AddOnStatus.ALPHA)
 
     releaseLink.set("https://github.com/youruser/javaexample/compare/v@PREVIOUS_VERSION@...v@CURRENT_VERSION@")
@@ -40,7 +40,7 @@ spotless {
     java {
         licenseHeaderFile("$rootDir/gradle/spotless/license.java")
 
-        googleJavaFormat("1.7").aosp()
+        googleJavaFormat("1.17.0").aosp()
     }
 
     kotlinGradle {
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 943f0cb..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 bc073f6..a6f7c3a 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,7 +1,8 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=312eb12875e1747e05c2f81a4789902d7e4ec5defbd1eefeaccc08acf096505d
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-all.zip
+distributionSha256Sum=7c3ad722e9b0ce8205b91560fd6ce8296ac3eadf065672242fd73c06b8eeb6ee
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.2.1-all.zip
 networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index 65dcd68..fcb6fca 100755
--- a/gradlew
+++ b/gradlew
@@ -85,9 +85,6 @@ done
 APP_BASE_NAME=${0##*/}
 APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
 
-# 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"'
-
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
 
@@ -133,10 +130,13 @@ 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.
@@ -144,7 +144,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
         # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045 
+        # shellcheck disable=SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
@@ -152,7 +152,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
       '' | soft) :;; #(
       *)
         # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045 
+        # shellcheck disable=SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -197,6 +197,10 @@ if "$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