diff --git a/buildSrc/build.gradle b/buildSrc/build.gradle
index c150445c..1b3fd0a2 100644
--- a/buildSrc/build.gradle
+++ b/buildSrc/build.gradle
@@ -7,7 +7,6 @@ plugins {
 sourceCompatibility = JavaVersion.VERSION_17
 
 repositories {
-    jcenter()
     gradlePluginPortal()
     mavenCentral()
     maven { url 'https://repo.spring.io/plugins-release/' }
diff --git a/buildSrc/src/main/groovy/io/spring/gradle/convention/RepositoryConventionPlugin.groovy b/buildSrc/src/main/groovy/io/spring/gradle/convention/RepositoryConventionPlugin.groovy
index c2420814..407163d8 100644
--- a/buildSrc/src/main/groovy/io/spring/gradle/convention/RepositoryConventionPlugin.groovy
+++ b/buildSrc/src/main/groovy/io/spring/gradle/convention/RepositoryConventionPlugin.groovy
@@ -35,11 +35,6 @@ class RepositoryConventionPlugin implements Plugin<Project> {
 				mavenLocal()
 			}
 			mavenCentral()
-			jcenter() {
-				content {
-					includeGroup "org.gretty"
-				}
-			}
 			if (isSnapshot) {
 				maven {
 					name = 'artifactory-snapshot'