diff --git a/src/refimpl-tests/pom.xml b/src/refimpl-tests/pom.xml
index 76e228ae..2a18f658 100644
--- a/src/refimpl-tests/pom.xml
+++ b/src/refimpl-tests/pom.xml
@@ -82,7 +82,7 @@
     <dependency>
       <groupId>org.testcontainers</groupId>
       <artifactId>spock</artifactId>
-      <version>1.20.3</version>
+      <version>1.20.4</version>
       <scope>test</scope>
     </dependency>
     <!-- Mandatory dependencies for using Spock -->