diff --git a/build.gradle b/build.gradle
index 0939c8f..a6e3de3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -97,9 +97,9 @@ dependencies {
     testImplementation "org.hamcrest:hamcrest-library"
 
     // testcontainers
-    testImplementation "org.testcontainers:testcontainers:1.19.3"
-    testImplementation "org.testcontainers:mongodb:1.19.3"
-    testImplementation "org.testcontainers:junit-jupiter:1.19.3"
+    testImplementation "org.testcontainers:testcontainers:1.21.3"
+    testImplementation "org.testcontainers:mongodb:1.21.3"
+    testImplementation "org.testcontainers:junit-jupiter:1.21.3"
 }
 
 /**********************************************************************************************************************\