diff --git a/README.md b/README.md
index ea4adaed5..7dc745ef8 100644
--- a/README.md
+++ b/README.md
@@ -28,13 +28,6 @@ If you do not have an IDE, from step 5, you'll instead:
 2. Launch an emulator: `fvm flutter emulators --launch Pixel_2_API_30`
 3. `fvm flutter run`
 
-If you get the `Unknown Kotlin JVM target: 21` error while trying to build the app, you probably have wrong JDK version.
-
-Install JDK 17 and update flutter config to point to this JDK:
-```bash
-fvm flutter config --jdk-dir <path-to-jdk-17>
-```
-
 ### Host-specific instructions: Ubuntu and similar
 
 To install FVM on Ubuntu, try something like:
diff --git a/android/buildSrc/build.gradle.kts b/android/buildSrc/build.gradle.kts
index 7b6853c10..67897f605 100644
--- a/android/buildSrc/build.gradle.kts
+++ b/android/buildSrc/build.gradle.kts
@@ -4,4 +4,8 @@ plugins {
 
 repositories {
     mavenCentral()
+}
+
+kotlin {
+    jvmToolchain(17)
 }
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