diff --git a/build.gradle b/build.gradle
index b07d2a24..13bbe37d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -190,7 +190,7 @@ dependencies {
   runtimeOnly("org.bouncycastle:bcpkix-jdk15on:1.70")
 
   testImplementation("junit-addons:junit-addons:1.4")
-  def testContainersVersion = "1.21.3"
+  def testContainersVersion = "1.21.4"
   testImplementation("org.testcontainers:junit-jupiter:${testContainersVersion}")
   testImplementation("org.testcontainers:mariadb:${testContainersVersion}")
   testImplementation("org.testcontainers:rabbitmq:${testContainersVersion}")