diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc347ba..b0911e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,8 +3,9 @@ CHANGELOG
 
 ### Version 8.1
 
-- Popup messages in the bottom area
+- Popup messages moved to the bottom area
 - New Launcher icon
+- fixed puzzles with target in direct line of robot
 
 ### Version 8.0
 
diff --git a/app/build.gradle b/app/build.gradle
index 139cfcd..886e531 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,8 +7,8 @@ android {
         applicationId "de.z11.roboyard"
         minSdkVersion 15
         targetSdkVersion 26
-        versionCode 25
-        versionName "8.0"
+        versionCode 26
+        versionName "8.1"
     }
     buildTypes {
         release {
diff --git a/download/Roboyard_v8.0.apk b/download/Roboyard_v8-1.apk
similarity index 90%
rename from download/Roboyard_v8.0.apk
rename to download/Roboyard_v8-1.apk
index d8f7fd9..0604f57 100644
Binary files a/download/Roboyard_v8.0.apk and b/download/Roboyard_v8-1.apk differ