diff --git a/Apps/PackageTest/0.63.1/android/build.gradle b/Apps/PackageTest/0.63.1/android/build.gradle
index 4ed7aa24c..b657dc674 100644
--- a/Apps/PackageTest/0.63.1/android/build.gradle
+++ b/Apps/PackageTest/0.63.1/android/build.gradle
@@ -7,6 +7,7 @@ buildscript {
         compileSdkVersion = 33
         targetSdkVersion = 33
         ndkVersion = "21.4.7075529"
+        kotlinVersion = "1.9.0"
     }
     repositories {
         google()
diff --git a/Apps/PackageTest/0.64.0/android/build.gradle b/Apps/PackageTest/0.64.0/android/build.gradle
index 4ed7aa24c..b657dc674 100644
--- a/Apps/PackageTest/0.64.0/android/build.gradle
+++ b/Apps/PackageTest/0.64.0/android/build.gradle
@@ -7,6 +7,7 @@ buildscript {
         compileSdkVersion = 33
         targetSdkVersion = 33
         ndkVersion = "21.4.7075529"
+        kotlinVersion = "1.9.0"
     }
     repositories {
         google()
diff --git a/Apps/PackageTest/0.65.0/android/build.gradle b/Apps/PackageTest/0.65.0/android/build.gradle
index 1dcab657e..6d2be3625 100644
--- a/Apps/PackageTest/0.65.0/android/build.gradle
+++ b/Apps/PackageTest/0.65.0/android/build.gradle
@@ -7,6 +7,7 @@ buildscript {
         compileSdkVersion = 33
         targetSdkVersion = 33
         ndkVersion = "21.4.7075529"
+        kotlinVersion = "1.9.0"
     }
     repositories {
         google()
diff --git a/Apps/PackageTest/0.69.0/android/build.gradle b/Apps/PackageTest/0.69.0/android/build.gradle
index c0ef0a842..278d03d60 100644
--- a/Apps/PackageTest/0.69.0/android/build.gradle
+++ b/Apps/PackageTest/0.69.0/android/build.gradle
@@ -15,6 +15,7 @@ buildscript {
             // Otherwise we default to the side-by-side NDK version from AGP.
             ndkVersion = "21.4.7075529"
         }
+        kotlinVersion = "1.9.0"
     }
     repositories {
         google()
diff --git a/Apps/Playground/0.64/android/build.gradle b/Apps/Playground/0.64/android/build.gradle
index 4ed7aa24c..b657dc674 100644
--- a/Apps/Playground/0.64/android/build.gradle
+++ b/Apps/Playground/0.64/android/build.gradle
@@ -7,6 +7,7 @@ buildscript {
         compileSdkVersion = 33
         targetSdkVersion = 33
         ndkVersion = "21.4.7075529"
+        kotlinVersion = "1.9.0"
     }
     repositories {
         google()
diff --git a/Apps/Playground/0.65/android/build.gradle b/Apps/Playground/0.65/android/build.gradle
index 1dcab657e..6d2be3625 100644
--- a/Apps/Playground/0.65/android/build.gradle
+++ b/Apps/Playground/0.65/android/build.gradle
@@ -7,6 +7,7 @@ buildscript {
         compileSdkVersion = 33
         targetSdkVersion = 33
         ndkVersion = "21.4.7075529"
+        kotlinVersion = "1.9.0"
     }
     repositories {
         google()
diff --git a/Apps/Playground/0.69/android/build.gradle b/Apps/Playground/0.69/android/build.gradle
index b0e2d1626..7c42cee75 100644
--- a/Apps/Playground/0.69/android/build.gradle
+++ b/Apps/Playground/0.69/android/build.gradle
@@ -15,6 +15,7 @@ buildscript {
             // Otherwise we default to the side-by-side NDK version from AGP.
             ndkVersion = "21.4.7075529"
         }
+        kotlinVersion = "1.9.0"
     }
     repositories {
         google()
diff --git a/Apps/Playground/0.70/android/build.gradle b/Apps/Playground/0.70/android/build.gradle
index 54c496777..74836c370 100644
--- a/Apps/Playground/0.70/android/build.gradle
+++ b/Apps/Playground/0.70/android/build.gradle
@@ -14,6 +14,7 @@ buildscript {
             // Otherwise we default to the side-by-side NDK version from AGP.
             ndkVersion = "21.4.7075529"
         }
+        kotlinVersion = "1.9.0"
     }
     repositories {
         google()
diff --git a/Apps/Playground/0.71/android/build.gradle b/Apps/Playground/0.71/android/build.gradle
index 3bc803b2c..5ef9e10dc 100644
--- a/Apps/Playground/0.71/android/build.gradle
+++ b/Apps/Playground/0.71/android/build.gradle
@@ -8,6 +8,7 @@ buildscript {
         targetSdkVersion = 30
 
         ndkVersion = "23.1.7779620"
+        kotlinVersion = "1.9.0"
     }
     repositories {
         google()