diff --git a/build.gradle.kts b/build.gradle.kts
index 0e72ea20c..df808a53c 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,6 +1,6 @@
 plugins {
   kotlin("jvm") version "1.6.21" apply false
-  kotlin("plugin.serialization") version "1.6.20" apply false
+  kotlin("plugin.serialization") version "1.6.21" apply false
   id("io.bkbn.sourdough.library.jvm") version "0.6.0" apply false
   id("io.bkbn.sourdough.application.jvm") version "0.6.0" apply false
   id("io.bkbn.sourdough.root") version "0.6.0"