diff --git a/buildSrc/src/main/kotlin/towa-module.gradle.kts b/buildSrc/src/main/kotlin/towa-module.gradle.kts
index 992dae3..f3b1a2a 100644
--- a/buildSrc/src/main/kotlin/towa-module.gradle.kts
+++ b/buildSrc/src/main/kotlin/towa-module.gradle.kts
@@ -61,7 +61,7 @@ dependencies {
     api("org.slf4j:slf4j-api:1.7.36")
 
     // testing utilities
-    testImplementation(platform("io.kotest:kotest-bom:5.3.2"))
+    testImplementation(platform("io.kotest:kotest-bom:5.4.0"))
     testImplementation("io.kotest:kotest-runner-junit5")
     testImplementation("io.kotest:kotest-assertions-core")
     testImplementation("io.kotest:kotest-property")