diff --git a/router-openapi-request-validator/build.gradle.kts b/router-openapi-request-validator/build.gradle.kts
index 0f7447c..cbd78a1 100644
--- a/router-openapi-request-validator/build.gradle.kts
+++ b/router-openapi-request-validator/build.gradle.kts
@@ -10,7 +10,7 @@ dependencies {
     api(project(":router"))
 
     testImplementation("org.junit.jupiter:junit-jupiter-engine:5.10.3")
-    testImplementation("org.assertj:assertj-core:3.26.0")
+    testImplementation("org.assertj:assertj-core:3.26.3")
     testImplementation("io.mockk:mockk:1.13.11")
     testImplementation("org.slf4j:slf4j-simple:2.0.13")
 }
\ No newline at end of file
diff --git a/router-protobuf/build.gradle.kts b/router-protobuf/build.gradle.kts
index 8c79fc5..5221f9a 100644
--- a/router-protobuf/build.gradle.kts
+++ b/router-protobuf/build.gradle.kts
@@ -20,7 +20,7 @@ dependencies {
 
     testImplementation("org.junit.jupiter:junit-jupiter-engine:5.10.2")
     testImplementation("com.willowtreeapps.assertk:assertk-jvm:0.28.1")
-    testImplementation("org.assertj:assertj-core:3.26.0")
+    testImplementation("org.assertj:assertj-core:3.26.3")
     testImplementation("io.mockk:mockk:1.13.11")
     testImplementation("org.slf4j:slf4j-simple:2.0.13")
     testImplementation("com.jayway.jsonpath:json-path:2.9.0")
diff --git a/router/build.gradle.kts b/router/build.gradle.kts
index 84221ad..938d417 100644
--- a/router/build.gradle.kts
+++ b/router/build.gradle.kts
@@ -14,7 +14,7 @@ dependencies {
     testImplementation("org.junit.jupiter:junit-jupiter-engine:5.10.2")
     testImplementation("org.junit.jupiter:junit-jupiter-params:5.10.2")
     testImplementation("com.willowtreeapps.assertk:assertk-jvm:0.28.1")
-    testImplementation("org.assertj:assertj-core:3.26.0")
+    testImplementation("org.assertj:assertj-core:3.26.3")
     testImplementation("io.mockk:mockk:1.13.11")
     testImplementation("ch.qos.logback:logback-classic:1.5.6")
 }