diff --git a/README.md b/README.md
index 4b5a461..0ebe984 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@ Just play it!
 
 ### Game
 
-- Variable game board grid size from three-by-three to nine-by-nine (Larger than nine-by-nine is
+- Variable game board grid size from three-by-three to seven-by-seven (Larger than seven-by-seven is
   simply ridiculous and unplayable in mobile phones)
 - Variable game ai difficulty (easy, medium, hard)
 
diff --git a/build.gradle b/build.gradle
index 3233b2e..24950ec 100644
--- a/build.gradle
+++ b/build.gradle
@@ -28,7 +28,7 @@ buildscript {
 plugins {
     id 'com.android.application' version '7.4.1' apply false
     id 'com.android.library' version '7.4.1' apply false
-    id 'org.jetbrains.kotlin.android' version '1.8.10' apply false
+    id 'org.jetbrains.kotlin.android' version '1.7.20' apply false
 }
 
 task clean(type: Delete) {