diff --git a/README.md b/README.md
index bffa586..4add4b9 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Coming soon:
 - [TripInfo Request](https://opentransportdata.swiss/en/cookbook/ojptripinforequest/)
 
 ## Requirements
-Compatible with Android 7+
+Compatible with Android 8+
 
 ## Integration
 To integrate the SDK you have to add following dependency:
@@ -23,18 +23,6 @@ dependencies {
     implementation 'io.github.opentdatach:ojp-android:1.3.4'
 }
 ```
-Additionally you may need to enable coreLibraryDesugaring to use Java8 features below API 26 (we use LocalDateTime for parsing)
-```
-compileOptions {
-    isCoreLibraryDesugaringEnabled = true
-    ...
-}
-
-dependencies {
-    coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.1.5")
-    ...
-}
-```
 
 ## Usage
 ### Initializing
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 17bc907..f5dade6 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -13,7 +13,7 @@ android {
 
     defaultConfig {
         applicationId = "ch.opentransportdata"
-        minSdk = 25
+        minSdk = 26
         targetSdk = 35
         versionCode = 1
         versionName = "1.0"
@@ -34,7 +34,6 @@ android {
         }
     }
     compileOptions {
-        isCoreLibraryDesugaringEnabled = true
         sourceCompatibility = JavaVersion.VERSION_17
         targetCompatibility = JavaVersion.VERSION_17
     }
@@ -55,9 +54,6 @@ android {
 }
 
 dependencies {
-
-    coreLibraryDesugaring(libs.desugar.jdk.libs)
-
     implementation(project(":sdk"))
     implementation(libs.core.ktx)
     implementation(libs.lifecycle.runtime.ktx)
diff --git a/app/src/main/java/ch/opentransportdata/presentation/utils/DurationExtension.kt b/app/src/main/java/ch/opentransportdata/presentation/utils/DurationExtension.kt
index 50d9063..5bcb3f8 100644
--- a/app/src/main/java/ch/opentransportdata/presentation/utils/DurationExtension.kt
+++ b/app/src/main/java/ch/opentransportdata/presentation/utils/DurationExtension.kt
@@ -6,8 +6,11 @@ import java.time.Duration
  * Created by Deniz Kalem on 12.09.2024
  */
 fun Duration.toFormattedString(): String {
+    val totalMinutes = this.toMinutes()
+    val hours = (totalMinutes / 60)
+    val minutes = (totalMinutes % 60)
     return when {
-        toHoursPart() == 0 -> "${this.toMinutesPart()}min"
-        else -> "${this.toHoursPart()}h ${this.toMinutesPart()}min"
+        hours <= 0 -> "${minutes}min"
+        else -> "${hours}h ${minutes}min"
     }
 }
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index c690a48..bff8cc5 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,7 +1,6 @@
 [versions]
 agp = "8.13.0"
 assertk = "0.28.1"
-desugar_jdk_libs = "2.1.5"
 kotlin = "2.2.0"
 coreKtx = "1.15.0"
 junit = "4.13.2"
@@ -26,7 +25,6 @@ playServices = "21.3.0"
 assertk = { module = "com.willowtreeapps.assertk:assertk", version.ref = "assertk" }
 converter-kotlinx-serialization = { module = "com.squareup.retrofit2:converter-kotlinx-serialization", version.ref = "retrofit2" }
 core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
-desugar_jdk_libs = { module = "com.android.tools:desugar_jdk_libs", version.ref = "desugar_jdk_libs" }
 junit = { group = "junit", name = "junit", version.ref = "junit" }
 androidx-test-ext-junit = { group = "androidx.test.ext", name = "junit", version.ref = "extJunit" }
 kotlinx-coroutines-test = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-test", version.ref = "kotlinxCoroutinesTest" }
diff --git a/sdk/build.gradle.kts b/sdk/build.gradle.kts
index caa8247..d3ed5cd 100644
--- a/sdk/build.gradle.kts
+++ b/sdk/build.gradle.kts
@@ -20,7 +20,7 @@ android {
     compileSdk = 35
 
     defaultConfig {
-        minSdk = 25
+        minSdk = 26
         lint.targetSdk = 35
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
 
@@ -55,7 +55,6 @@ android {
     }
 
     compileOptions {
-        isCoreLibraryDesugaringEnabled = true
         sourceCompatibility = JavaVersion.VERSION_17
         targetCompatibility = JavaVersion.VERSION_17
     }
@@ -81,8 +80,6 @@ android {
 }
 
 dependencies {
-    coreLibraryDesugaring(libs.desugar.jdk.libs)
-
     implementation(libs.core.ktx)
     implementation(libs.timber)
     implementation(libs.koin.android)