diff --git a/grails-testing-support-dbcleanup-postgresql/build.gradle b/grails-testing-support-dbcleanup-postgresql/build.gradle
index 3644ad14619..8d8d9c43ef8 100644
--- a/grails-testing-support-dbcleanup-postgresql/build.gradle
+++ b/grails-testing-support-dbcleanup-postgresql/build.gradle
@@ -49,8 +49,8 @@ dependencies {
 
     testImplementation 'org.apache.groovy:groovy'
     testImplementation 'org.postgresql:postgresql'
-    testImplementation 'org.testcontainers:postgresql:1.20.1'
-    testImplementation 'org.testcontainers:testcontainers:1.20.1'
+    testImplementation 'org.testcontainers:postgresql:1.21.4'
+    testImplementation 'org.testcontainers:testcontainers:1.21.4'
     testImplementation 'org.slf4j:slf4j-simple'
     testRuntimeOnly 'net.bytebuddy:byte-buddy'
 }