diff --git a/build.gradle b/build.gradle
index da3931e43dd..3233b7f314e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -26,7 +26,7 @@ plugins {
   id 'de.thetaphi.forbiddenapis' version '3.10' apply false
   id 'de.undercouch.download' version '5.6.0' apply false
   id 'net.ltgt.errorprone' version '3.1.0' apply false
-  id 'com.diffplug.spotless' version '7.2.1' apply false
+  id 'com.diffplug.spotless' version '8.1.0' apply false
   id 'com.github.node-gradle.node' version '7.1.0' apply false
   id 'dev.logchange' version '1.19.10'
 }
diff --git a/changelog/unreleased/PR#4036-update-plugin-com-diffplug-spotless-to-v8-branch.yml b/changelog/unreleased/PR#4036-update-plugin-com-diffplug-spotless-to-v8-branch.yml
new file mode 100644
index 00000000000..c2d2b868b3c
--- /dev/null
+++ b/changelog/unreleased/PR#4036-update-plugin-com-diffplug-spotless-to-v8-branch.yml
@@ -0,0 +1,7 @@
+title: Update plugin com.diffplug.spotless to v8 (branch_9x)
+type: dependency_update
+authors:
+- name: solrbot
+links:
+- name: PR#4036
+  url: https://github.com/apache/solr/pull/4036