diff --git a/library/build.gradle b/library/build.gradle
index 4c71cb6..60545de 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -13,7 +13,7 @@ ext {
     siteUrl = 'https://github.com/Mordag/hitogo'
     gitUrl = 'https://github.com/Mordag/hitogo.git'
 
-    libraryVersion = '1.0.0'
+    libraryVersion = '1.0.1'
 
     developerId = 'mordag'
     developerName = 'Alexander Eggers'
diff --git a/library/src/main/java/org/hitogo/alert/popup/PopupAlertParams.java b/library/src/main/java/org/hitogo/alert/popup/PopupAlertParams.java
index 5fef1e4..5c334aa 100644
--- a/library/src/main/java/org/hitogo/alert/popup/PopupAlertParams.java
+++ b/library/src/main/java/org/hitogo/alert/popup/PopupAlertParams.java
@@ -1,5 +1,6 @@
 package org.hitogo.alert.popup;
 
+import android.os.Build;
 import android.transition.Transition;
 import android.view.View;
 
@@ -52,8 +53,11 @@ protected void onCreateParams(HitogoParamsHolder holder) {
         dismissByLayoutClick = holder.getBoolean(PopupAlertParamsKeys.DISMISS_BY_LAYOUT_CLICK_KEY);
         fullScreen = holder.getBoolean(PopupAlertParamsKeys.FULLSCREEN_KEY);
 
-        enterTransition = holder.getCustomObject(PopupAlertParamsKeys.ENTER_TRANSITION_KEY);
-        exitTransition = holder.getCustomObject(PopupAlertParamsKeys.EXIT_TRANSITION_KEY);
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            enterTransition = holder.getCustomObject(PopupAlertParamsKeys.ENTER_TRANSITION_KEY);
+            exitTransition = holder.getCustomObject(PopupAlertParamsKeys.EXIT_TRANSITION_KEY);
+        }
+
         onTouchListener = holder.getCustomObject(PopupAlertParamsKeys.TOUCH_LISTENER_KEY);
     }
 
diff --git a/testing/build.gradle b/testing/build.gradle
index 51adce9..aa377ec 100644
--- a/testing/build.gradle
+++ b/testing/build.gradle
@@ -13,7 +13,7 @@ ext {
     siteUrl = 'https://github.com/Mordag/hitogo'
     gitUrl = 'https://github.com/Mordag/hitogo.git'
 
-    libraryVersion = '1.0.0'
+    libraryVersion = '1.0.1'
 
     developerId = 'mordag'
     developerName = 'Alexander Eggers'
@@ -51,7 +51,7 @@ android.libraryVariants.all { variant ->
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    //implementation 'org.hitogo:hitogo-core:1.0.0'
+    //implementation 'org.hitogo:hitogo-core:1.0.1'
     implementation project(path: ':hitogo-core')
 
     implementation "com.android.support:support-annotations:27.0.2"