diff --git a/Library/build.gradle.kts b/Library/build.gradle.kts
index fec15e8..4ee8336 100644
--- a/Library/build.gradle.kts
+++ b/Library/build.gradle.kts
@@ -1,7 +1,10 @@
+import org.gradle.kotlin.dsl.invoke
+
 plugins {
     alias(libs.plugins.android.library)
     alias(libs.plugins.kotlin.android)
     alias(libs.plugins.android.coveralls)
+    id("jacoco")
 }
 
 android {
@@ -23,6 +26,9 @@ android {
                 "proguard-rules.pro"
             )
         }
+        debug { // Asegúrate de que los reports de test estén habilitados para debug
+            enableUnitTestCoverage = true
+        }
     }
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_17
@@ -32,7 +38,9 @@ android {
         jvmTarget = "17"
     }
 }
-
+jacoco {
+    toolVersion = "0.8.5" // La versión que sugeriste en la documentación
+}
 
 dependencies {
     implementation(libs.androidx.core.ktx)
@@ -45,3 +53,114 @@ dependencies {
     androidTestImplementation(libs.androidx.junit)
     androidTestImplementation(libs.androidx.espresso.core)
 }
+
+tasks.register("jacocoReport", JacocoReport::class) {
+    dependsOn("test") // Aseguramos que los unit tests se ejecuten antes
+
+    group = "Reporting"
+    description = "Generates JaCoCo coverage report for the Library module."
+
+    reports {
+        xml.required.set(true)
+        html.required.set(true)
+    }
+
+    val fileTreeConfig: (ConfigurableFileTree) -> Unit = {
+        it.exclude(
+            "**/R.class", "**/R\$*.class", "**/BuildConfig.*", "**/Manifest*.*", // Android
+            "android/**/*.*",
+            "**/*_Factory.class", "**/*_MembersInjector.class", "**/*_Provide*.class" // Dagger/Hilt generated classes (if applicable)
+        )
+    }
+
+    sourceDirectories.setFrom(files(
+        "${project.projectDir}/src/main/java",
+        "${project.projectDir}/src/main/kotlin" // Añadido para Kotlin
+    ))
+
+    // Rutas de clases compiladas
+    classDirectories.setFrom(
+        fileTree("${project.buildDir}/intermediates/javac/debug") { fileTreeConfig(this) } +
+                fileTree("${project.buildDir}/tmp/kotlin-classes/debug") { fileTreeConfig(this) }
+        // Si tienes otros paths de clases compiladas (ej. para variantes específicas), añádelas aquí
+    )
+
+    // Rutas de datos de ejecución de JaCoCo
+    executionData.setFrom(fileTree(project.buildDir) {
+        include("jacoco/testDebugUnitTest.exec") // Para Unit Tests
+        // include("outputs/code_coverage/debugAndroidTest/connected_coverage.exec") // Si tienes Instrumented Tests y quieres incluirlos
+    })
+
+    // Asegúrate de que los archivos de ejecución existan antes de procesar
+    doFirst {
+        executionData.setFrom(files(executionData.filter { it.exists() }))
+    }
+}
+
+tasks {
+    register("jacocoFullReport", JacocoReport::class) {
+        val jacocoReportTask = this
+
+        group = "Coverage reports"
+
+        val subTasks = getByName("jacocoReport", JacocoReport::class)
+        dependsOn(subTasks)
+
+        val subSourceDirs = subTasks.sourceDirectories
+        additionalSourceDirs.setFrom(subSourceDirs)
+        sourceDirectories.setFrom(subSourceDirs)
+
+        classDirectories.setFrom(files(subTasks.classDirectories))
+        executionData.setFrom(files(subTasks.executionData))
+
+        reports {
+            html.required = true
+            html.outputLocation = file("$buildDir/reports/jacoco/html")
+
+            xml.required = true
+            xml.outputLocation = file("$buildDir/reports/jacoco/jacocoFullReport.xml")
+        }
+
+        doFirst {
+            executionData.setFrom(files(executionData.filter { it.exists() }))
+        }
+
+        coverallsJacoco {
+            dependsOn(jacocoReportTask)
+
+            reportPath = "$buildDir/reports/jacoco/jacocoFullReport.xml"
+            reportSourceSets = subSourceDirs.flatMap { files(it) }
+        }
+    }
+}
+
+
+// **Configuración para el plugin de Coveralls:**
+// El plugin de Coveralls (asumiendo que es `com.github.klieber.coveralls`)
+// automáticamente buscará una tarea JacocoReport y la usará.
+// Por defecto, crea una tarea llamada `coverallsJacoco`.
+// Solo necesitamos asegurarnos de que `coverallsJacoco` dependa de nuestro `jacocoReport` personalizado.
+tasks.named("coverallsJacoco") {
+    dependsOn(tasks.named("jacocoReport")) // Asegura que 'jacocoReport' se ejecute antes de coverallsJacoco
+}
+
+// Opcional: Si quieres un reporte JaCoCo para instrumented tests
+// tasks.register("jacocoAndroidTestReport", JacocoReport::class) {
+//     dependsOn("createDebugCoverageReport") // Esta tarea se genera por AGP para instrumented tests
+//     group = "Reporting"
+//     description = "Generates JaCoCo coverage report for Android Instrumented Tests."
+//
+//     reports {
+//         xml.required.set(true)
+//         html.required.set(true)
+//     }
+//
+//     classDirectories.setFrom(fileTree("${project.buildDir}/intermediates/javac/debug") +
+//             fileTree("${project.buildDir}/tmp/kotlin-classes/debug"))
+//
+//     executionData.setFrom(fileTree(project.buildDir) {
+//         include("outputs/code_coverage/debugAndroidTest/connected_coverage.exec")
+//     })
+//
+//     sourceSets.setFrom(files("${project.projectDir}/src/main/java", "${project.projectDir}/src/main/kotlin"))
+// }
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index b540729..33cd325 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -6,12 +6,12 @@ plugins {
 
 android {
     namespace = "com.blipblipcode.datetime"
-    compileSdk = 35
+    compileSdk = 36
 
     defaultConfig {
         applicationId = "com.blipblipcode.datetime"
         minSdk = 24
-        targetSdk = 35
+        targetSdk = 36
         versionCode = 1
         versionName = "1.0"
 
@@ -48,8 +48,8 @@ dependencies {
     implementation(platform(libs.androidx.compose.bom))
 
     implementation(libs.threetenabp)
-    implementation(project(":Library"))
-    //implementation(libs.dateTime)
+    //implementation(project(":Library"))
+    implementation(libs.dateTime)
     implementation(libs.androidx.ui)
     implementation(libs.androidx.ui.graphics)
     implementation(libs.androidx.ui.tooling.preview)