diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 40b77f8..4142628 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -1,3 +1,2 @@
-examples/jvm-with-anvil/ Anvil
 examples/scopes/ @handstandsam
-examples/app/ AppTeam
\ No newline at end of file
+examples/app/ @handstandsam
diff --git a/gradle.properties b/gradle.properties
index dd40e49..4e77a5b 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,4 +1,4 @@
-org.gradle.jvmargs=-Xmx8g
+org.gradle.jvmargs=-Xmx16g
 kotlin.code.style=official
 android.useAndroidX=true
 
diff --git a/invert-gradle-plugin/src/main/kotlin/com/squareup/invert/InvertExtension.kt b/invert-gradle-plugin/src/main/kotlin/com/squareup/invert/InvertExtension.kt
index d3f54c8..0b2717b 100644
--- a/invert-gradle-plugin/src/main/kotlin/com/squareup/invert/InvertExtension.kt
+++ b/invert-gradle-plugin/src/main/kotlin/com/squareup/invert/InvertExtension.kt
@@ -6,6 +6,7 @@ import com.squareup.invert.internal.NoOpOwnershipCollector
 import com.squareup.invert.models.ConfigurationName
 import org.gradle.api.Project
 import org.gradle.api.tasks.Input
+import org.gradle.api.tasks.InputFile
 
 /**
  * Extension for configuring the [InvertGradlePlugin]
@@ -45,10 +46,18 @@ open class InvertExtension(project: Project) {
   internal val includeConfigurationProperty =
     objects.property(InvertIncludeConfigurationCalculator::class.java)
 
+  @get:InputFile
+  @get:Input
+  internal val historicalDataFileProperty = objects.property<String?>(String::class.java)
+
   fun ownershipCollector(ownershipCollector: InvertOwnershipCollector) {
     ownershipCollectorProperty.set(ownershipCollector)
   }
 
+  fun historicalData(historicalDataFile: String) {
+    this.historicalDataFileProperty.set(historicalDataFile)
+  }
+
   fun includeSubproject(invertShouldIncludeSubProject: (subproject: Project) -> Boolean) {
     includeSubProjectCalculatorProperty.set(object : InvertIncludeSubProjectCalculator {
       override fun invoke(
@@ -79,6 +88,10 @@ open class InvertExtension(project: Project) {
     statCollectors.add(statCollector)
   }
 
+  internal fun getHistoricalDataFilePath(): String? {
+    return historicalDataFileProperty.orNull
+  }
+
   internal fun getStatCollectors(): Collection<StatCollector> {
     return statCollectors
   }
diff --git a/invert-gradle-plugin/src/main/kotlin/com/squareup/invert/internal/report/InvertReportWriter.kt b/invert-gradle-plugin/src/main/kotlin/com/squareup/invert/internal/report/InvertReportWriter.kt
index b05e503..001ed61 100644
--- a/invert-gradle-plugin/src/main/kotlin/com/squareup/invert/internal/report/InvertReportWriter.kt
+++ b/invert-gradle-plugin/src/main/kotlin/com/squareup/invert/internal/report/InvertReportWriter.kt
@@ -44,6 +44,12 @@ class InvertReportWriter(
 
     val globalStats = computeGlobalTotals(allProjectsStatsData, collectedOwnershipInfo)
 
+//    val historicalDataWithCurrent = historicalData
+//    + HistoricalData(
+//      reportMetadata = reportMetadata,
+//      statTotalsAndMetadata = CollectedStatTotalsJsReportModel(globalStats)
+//    )
+
     // JSON Report
     InvertJsonReportWriter(invertLogger, rootBuildReportsDir).createInvertJsonReport(
       reportMetadata = reportMetadata,
diff --git a/invert-gradle-plugin/src/main/kotlin/com/squareup/invert/internal/tasks/InvertTask.kt b/invert-gradle-plugin/src/main/kotlin/com/squareup/invert/internal/tasks/InvertTask.kt
index da1293c..41bd8d0 100644
--- a/invert-gradle-plugin/src/main/kotlin/com/squareup/invert/internal/tasks/InvertTask.kt
+++ b/invert-gradle-plugin/src/main/kotlin/com/squareup/invert/internal/tasks/InvertTask.kt
@@ -11,7 +11,10 @@ import com.squareup.invert.internal.report.GradleProjectAnalysisCombiner
 import com.squareup.invert.internal.report.InvertReportWriter
 import com.squareup.invert.logging.GradleInvertLogger
 import com.squareup.invert.logging.InvertLogger
+import com.squareup.invert.models.InvertSerialization.InvertJson
+import com.squareup.invert.models.js.HistoricalData
 import kotlinx.coroutines.runBlocking
+import kotlinx.serialization.builtins.ListSerializer
 import org.gradle.api.DefaultTask
 import org.gradle.api.Project
 import org.gradle.api.artifacts.repositories.UrlArtifactRepository
@@ -20,6 +23,7 @@ import org.gradle.api.provider.ListProperty
 import org.gradle.api.provider.Property
 import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.Internal
+import org.gradle.api.tasks.Optional
 import org.gradle.api.tasks.OutputDirectory
 import org.gradle.api.tasks.TaskAction
 import java.io.File
@@ -41,6 +45,10 @@ abstract class InvertTask : DefaultTask() {
   @get:Internal
   abstract var statCollectors: List<StatCollector>?
 
+  @get:Optional
+  @get:Input
+  abstract val historicalDataFileProperty: Property<String?>
+
   @get:Input
   abstract val projectPath: Property<String>
 
@@ -86,6 +94,20 @@ abstract class InvertTask : DefaultTask() {
         )
       )
 
+      val historicalDataFile: File? = historicalDataFileProperty.orNull?.let { File(it) }
+      val historicalData: List<HistoricalData> =
+        if (historicalDataFile?.isFile == true && historicalDataFile.length() > 0) {
+          try {
+            val fileContents = historicalDataFile.readText()
+            InvertJson.decodeFromString(ListSerializer(HistoricalData.serializer()), fileContents)
+          } catch (e: Exception) {
+            invertLogger().warn("Failed to read historical data file: $e")
+            listOf()
+          }
+        } else {
+          listOf()
+        }
+
       InvertReportWriter(
         invertLogger = invertLogger(),
         rootBuildReportsDir = invertReportDir,
@@ -96,7 +118,7 @@ abstract class InvertTask : DefaultTask() {
         collectedDependencies = allCollectedData.collectedDependencies,
         collectedConfigurations = allCollectedData.collectedConfigurations,
         collectedPlugins = allCollectedData.collectedPlugins,
-        historicalData = emptyList(),
+        historicalData = historicalData,
       )
     }
   }
@@ -117,7 +139,7 @@ abstract class InvertTask : DefaultTask() {
         InvertFileUtils.REPORTS_SLASH_INVERT_PATH
       )
     )
-
+    this.historicalDataFileProperty.set(extension.getHistoricalDataFilePath())
     this.statCollectors = extension.getStatCollectors().toList()
 
     this.mavenRepoUrls.set(