diff --git a/build.gradle.kts b/build.gradle.kts
index 56ec67a5e..60c494a76 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,6 +1,6 @@
 plugins {
   kotlin("jvm") version "1.9.0" apply false
-  kotlin("plugin.serialization") version "1.8.22" apply false
+  kotlin("plugin.serialization") version "1.9.0" apply false
   id("io.bkbn.sourdough.library.jvm") version "0.12.0" apply false
   id("io.bkbn.sourdough.application.jvm") version "0.12.0" apply false
   id("io.bkbn.sourdough.root") version "0.12.0"