diff --git a/router-openapi-request-validator/build.gradle.kts b/router-openapi-request-validator/build.gradle.kts
index aef14254..4dd76c8b 100644
--- a/router-openapi-request-validator/build.gradle.kts
+++ b/router-openapi-request-validator/build.gradle.kts
@@ -11,6 +11,6 @@ dependencies {
 
     testImplementation("org.junit.jupiter:junit-jupiter-engine:5.10.1")
     testImplementation("org.assertj:assertj-core:3.24.2")
-    testImplementation("io.mockk:mockk:1.13.8")
+    testImplementation("io.mockk:mockk:1.13.9")
     testImplementation("org.slf4j:slf4j-simple:2.0.9")
 }
\ No newline at end of file
diff --git a/router-protobuf/build.gradle.kts b/router-protobuf/build.gradle.kts
index ba3495a8..e4175bfd 100644
--- a/router-protobuf/build.gradle.kts
+++ b/router-protobuf/build.gradle.kts
@@ -22,7 +22,7 @@ dependencies {
     testImplementation("org.junit.jupiter:junit-jupiter-engine:5.10.1")
     testImplementation("com.willowtreeapps.assertk:assertk-jvm:0.27.0")
     testImplementation("org.assertj:assertj-core:3.24.2")
-    testImplementation("io.mockk:mockk:1.13.8")
+    testImplementation("io.mockk:mockk:1.13.9")
     testImplementation("org.slf4j:slf4j-simple:2.0.9")
     testImplementation("com.jayway.jsonpath:json-path:2.8.0")
 }
diff --git a/router/build.gradle.kts b/router/build.gradle.kts
index d53a50cd..a46f8109 100644
--- a/router/build.gradle.kts
+++ b/router/build.gradle.kts
@@ -15,6 +15,6 @@ dependencies {
     testImplementation("org.junit.jupiter:junit-jupiter-params:5.10.1")
     testImplementation("com.willowtreeapps.assertk:assertk-jvm:0.27.0")
     testImplementation("org.assertj:assertj-core:3.24.2")
-    testImplementation("io.mockk:mockk:1.13.8")
+    testImplementation("io.mockk:mockk:1.13.9")
     testImplementation("ch.qos.logback:logback-classic:1.4.11")
 }