diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 477ded002a..f36d54b6f5 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -1108,6 +1108,10 @@ bom {
 		}
 	}
 	library("Kotlin Serialization", "1.6.3") {
+		prohibit {
+			versionRange "[1.7.0-RC,)"
+			because "it requires Kotlin 2"
+		}
 		group("org.jetbrains.kotlinx") {
 			imports = [
 				"kotlinx-serialization-bom"