diff --git a/flow/build.gradle.kts b/flow/build.gradle.kts
index 90b4f6e..838ec45 100644
--- a/flow/build.gradle.kts
+++ b/flow/build.gradle.kts
@@ -100,7 +100,7 @@ dependencies {
 
     api("androidx.startup:startup-runtime:1.2.0")
 
-    val billingVersion = "8.3.0"
+    val billingVersion = "9.0.0"
     api("com.android.billingclient:billing-ktx:$billingVersion")
 
     implementation("androidx.annotation:annotation:1.10.0")