diff --git a/elasticsearch/examples/security/Makefile b/elasticsearch/examples/security/Makefile
index 3d10b0b81..d8c6f11c7 100644
--- a/elasticsearch/examples/security/Makefile
+++ b/elasticsearch/examples/security/Makefile
@@ -20,7 +20,7 @@ pull-elasticsearch-image:
 secrets:
 	docker rm -f elastic-helm-charts-certs || true
 	rm -f elastic-certificates.p12 elastic-certificate.pem elastic-stack-ca.p12 || true
-	password=$$([ ! -z "$$ELASTIC_PASSWORD" ] && echo $$ELASTIC_PASSWORD || echo $$(docker run --rm $(ELASTICSEARCH_IMAGE) /bin/sh -c "< /dev/urandom tr -cd '[:alnum:]' | head -c20")) && \
+	password=$$([ ! -z "$$ELASTIC_PASSWORD" ] && echo $$ELASTIC_PASSWORD || echo $$(docker run --rm busybox:1.31.1 /bin/sh -c "< /dev/urandom tr -cd '[:alnum:]' | head -c20")) && \
 	docker run --name elastic-helm-charts-certs -i -w /app \
 		$(ELASTICSEARCH_IMAGE) \
 		/bin/sh -c " \
diff --git a/kibana/examples/security/Makefile b/kibana/examples/security/Makefile
index a54769d95..d3a365fd7 100644
--- a/kibana/examples/security/Makefile
+++ b/kibana/examples/security/Makefile
@@ -13,5 +13,5 @@ purge:
 	helm del --purge $(RELEASE)
 
 secrets:
-	encryptionkey=$$(echo $$(docker run --rm docker.elastic.co/elasticsearch/elasticsearch:$(STACK_VERSION) /bin/sh -c "< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c50")) && \
+	encryptionkey=$$(docker run --rm busybox:1.31.1 /bin/sh -c "< /dev/urandom tr -dc _A-Za-z0-9 | head -c50") && \
 	kubectl create secret generic kibana --from-literal=encryptionkey=$$encryptionkey