diff --git a/build-logic/src/main/kotlin/dev/msfjarvis/claw/gradle/KotlinCommonPlugin.kt b/build-logic/src/main/kotlin/dev/msfjarvis/claw/gradle/KotlinCommonPlugin.kt
index ead96e85..542ffffb 100644
--- a/build-logic/src/main/kotlin/dev/msfjarvis/claw/gradle/KotlinCommonPlugin.kt
+++ b/build-logic/src/main/kotlin/dev/msfjarvis/claw/gradle/KotlinCommonPlugin.kt
@@ -31,7 +31,7 @@ class KotlinCommonPlugin : Plugin<Project> {
         compilerOptions {
           allWarningsAsErrors.set(true)
           freeCompilerArgs.addAll(ADDITIONAL_COMPILER_ARGS)
-          languageVersion.set(KotlinVersion.KOTLIN_1_8)
+          languageVersion.set(KotlinVersion.KOTLIN_1_9)
         }
       }
       withType<Test>().configureEach {