diff --git a/android_app/app/build.gradle.kts b/android_app/app/build.gradle.kts
index 4012e05b1678cbc945fb90ef8e20e1767fffd902..74bf698f8d0804ecc869d16720ebb9eff7b6d7d8 100644
--- a/android_app/app/build.gradle.kts
+++ b/android_app/app/build.gradle.kts
@@ -23,12 +23,12 @@ ksp {
 
 android {
     namespace = "com.health.openscale"
-    compileSdk = 37
+    compileSdk = 36
 
     defaultConfig {
         applicationId = "com.health.openscale"
         minSdk = 31
-        targetSdk = 37
+        targetSdk = 36
         versionCode = 75
         versionName = "3.1.1"
 
diff --git a/android_app/gradle/libs.versions.toml b/android_app/gradle/libs.versions.toml
index bb6ea3f3650ba2dd84f1e415f42883231bc2191e..b513ded6a22adf4519f4f239f97af01e366b3682 100644
--- a/android_app/gradle/libs.versions.toml
+++ b/android_app/gradle/libs.versions.toml
@@ -1,7 +1,7 @@
 [versions]
 agp = "9.2.1"
 kotlin = "2.4.0"
-coreKtx = "1.19.0"
+coreKtx = "1.15.0"
 junit = "4.13.2"
 junitVersion = "1.3.0"
 espressoCore = "3.7.0"