diff --git a/mediator/Dockerfile b/mediator/Dockerfile
index 348fcb856..93b1ebe4e 100644
--- a/mediator/Dockerfile
+++ b/mediator/Dockerfile
@@ -2,6 +2,8 @@ FROM cgr.dev/chainguard/jre:latest
 
 ENV LANG='nb_NO.UTF-8' LANGUAGE='nb_NO:nb' LC_ALL='nb:NO.UTF-8' TZ="Europe/Oslo"
 
+ENV JAVA_OPTS="--add-opens java.base/java.lang=ALL-UNNAMED"
+
 COPY build/libs/mediator-all.jar /app.jar
 
 ENTRYPOINT ["java", "-jar", "/app.jar"]
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