diff --git a/caffeine/build.gradle.kts b/caffeine/build.gradle.kts
index aa617a1eeb..30df549013 100644
--- a/caffeine/build.gradle.kts
+++ b/caffeine/build.gradle.kts
@@ -291,17 +291,20 @@ for (scenario in Scenario.all()) {
   }
 }
 
-eclipse.classpath {
-  plusConfigurations.add(configurations["javaPoetCompileClasspath"])
-
-  file.whenMerged {
-    if (this is EclipseClasspath) {
-      val regex = ".*collections4.*-tests.jar".toRegex()
-      entries.filterIsInstance<Library>()
-        .filter { regex.matches(it.path) }
-        .forEach { it.sourcePath = fileReference(file(collections4Sources.asPath)) }
+eclipse {
+  classpath {
+    plusConfigurations.add(configurations["javaPoetCompileClasspath"])
+
+    file.whenMerged {
+      if (this is EclipseClasspath) {
+        val regex = ".*collections4.*-tests.jar".toRegex()
+        entries.filterIsInstance<Library>()
+          .filter { regex.matches(it.path) }
+          .forEach { it.sourcePath = fileReference(file(collections4Sources.asPath)) }
+      }
     }
   }
+  synchronizationTasks(generateLocalCaches, generateNodes)
 }
 
 idea.module {
diff --git a/gradle/plugins/src/main/kotlin/lifecycle/auto-value.caffeine.gradle.kts b/gradle/plugins/src/main/kotlin/lifecycle/auto-value.caffeine.gradle.kts
index 17b9d2263f..1a11bd8256 100644
--- a/gradle/plugins/src/main/kotlin/lifecycle/auto-value.caffeine.gradle.kts
+++ b/gradle/plugins/src/main/kotlin/lifecycle/auto-value.caffeine.gradle.kts
@@ -1,4 +1,5 @@
 plugins {
+  eclipse
   `java-library`
 }
 
@@ -14,3 +15,7 @@ dependencies {
 tasks.named<Jar>("sourcesJar").configure {
   dependsOn(tasks.compileJava)
 }
+
+eclipse {
+  synchronizationTasks(tasks.compileJava)
+}
diff --git a/gradle/plugins/src/main/kotlin/lifecycle/eclipse.caffeine.gradle.kts b/gradle/plugins/src/main/kotlin/lifecycle/eclipse.caffeine.gradle.kts
index d7957599ce..a9904899ce 100644
--- a/gradle/plugins/src/main/kotlin/lifecycle/eclipse.caffeine.gradle.kts
+++ b/gradle/plugins/src/main/kotlin/lifecycle/eclipse.caffeine.gradle.kts
@@ -7,6 +7,7 @@ plugins {
 
 val eclipsePreferences by tasks.registering {
   description = "Generates the Eclipse preferences files."
+  incompatibleWithConfigurationCache()
   doFirst {
     addPreferences("org.eclipse.core.resources.prefs", mapOf(
       "encoding/<project>" to "UTF-8"))
@@ -41,6 +42,7 @@ fun addPreferences(path: String, preferences: Map<String, String>) {
   val settings = file(".settings/$path")
   if (!settings.exists()) {
     settings.parentFile.mkdirs()
+    settings.createNewFile()
   }
   val updates = preferences + ("eclipse.preferences.version" to "1")
   val text = settings.readLines()
diff --git a/jcache/build.gradle.kts b/jcache/build.gradle.kts
index db15dc69e2..667b93625f 100644
--- a/jcache/build.gradle.kts
+++ b/jcache/build.gradle.kts
@@ -141,11 +141,14 @@ tasks.named<CheckForbiddenApis>("forbiddenApisTest").configure {
     "jdk-non-portable", "jdk-reflection", "jdk-unsafe"))
 }
 
-eclipse.classpath.file.whenMerged {
-  if (this is Classpath) {
-    val regex = ".*cache-tests.*-tests.jar".toRegex()
-    entries.filterIsInstance<Library>()
-      .filter { regex.matches(it.path) }
-      .forEach { it.sourcePath = fileReference(file(jcacheTckSources.asPath)) }
+eclipse {
+  classpath.file.whenMerged {
+    if (this is Classpath) {
+      val regex = ".*cache-tests.*-tests.jar".toRegex()
+      entries.filterIsInstance<Library>()
+        .filter { regex.matches(it.path) }
+        .forEach { it.sourcePath = fileReference(file(jcacheTckSources.asPath)) }
+    }
   }
+  synchronizationTasks(testResourcesJar)
 }