diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1294989..b68403e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -58,7 +58,7 @@ jobs:
 
           docker-compose up -d elasticsearch
           source .github/workflows/scripts/lib/testing.sh
-          poll_ready "$(container_id elasticsearch)" "http://$(service_ip elasticsearch):9200/" 'elastic:changeme'
+          poll_ready "$(container_id elasticsearch)" "http://$(service_ip elasticsearch):9200/" -u 'elastic:changeme'
 
           # Set passwords
 
@@ -206,7 +206,7 @@ jobs:
           docker stack deploy -c ./docker-stack.yml elk
           docker service scale elk_logstash=0 elk_kibana=0
           source .github/workflows/scripts/lib/testing.sh
-          poll_ready "$(container_id elasticsearch)" "http://$(service_ip elasticsearch):9200/" 'elastic:changeme'
+          poll_ready "$(container_id elasticsearch)" "http://$(service_ip elasticsearch):9200/" -u 'elastic:changeme'
 
           # Set passwords
 
diff --git a/.github/workflows/scripts/lib/testing.sh b/.github/workflows/scripts/lib/testing.sh
index c9a7ff2..f9b8764 100755
--- a/.github/workflows/scripts/lib/testing.sh
+++ b/.github/workflows/scripts/lib/testing.sh
@@ -83,7 +83,7 @@ function poll_ready {
 
 	local -a args=( '-s' '-D-' '-m3' '-w' '%{http_code}' "$url" )
 	if [ "$#" -ge 3 ]; then
-		args+=( '-u' "$3" )
+		args+=( ${@:3} )
 	fi
 
 	echo "curl arguments: ${args[*]}"
diff --git a/.github/workflows/scripts/run-tests-core.sh b/.github/workflows/scripts/run-tests-core.sh
index f4ffd90..9acdcc9 100755
--- a/.github/workflows/scripts/run-tests-core.sh
+++ b/.github/workflows/scripts/run-tests-core.sh
@@ -21,13 +21,13 @@ ip_ls="$(service_ip logstash)"
 ip_kb="$(service_ip kibana)"
 
 log 'Waiting for readiness of Elasticsearch'
-poll_ready "$cid_es" "http://${ip_es}:9200/" 'elastic:testpasswd'
+poll_ready "$cid_es" "http://${ip_es}:9200/" -u 'elastic:testpasswd'
 
 log 'Waiting for readiness of Logstash'
 poll_ready "$cid_ls" "http://${ip_ls}:9600/_node/pipelines/main?pretty"
 
 log 'Waiting for readiness of Kibana'
-poll_ready "$cid_kb" "http://${ip_kb}:5601/api/status" 'kibana_system:testpasswd'
+poll_ready "$cid_kb" "http://${ip_kb}:5601/api/status" -u 'kibana_system:testpasswd'
 
 log 'Creating Logstash index pattern in Kibana'
 source .env
diff --git a/.github/workflows/scripts/run-tests-enterprise-search.sh b/.github/workflows/scripts/run-tests-enterprise-search.sh
index 2bde0a2..d379685 100755
--- a/.github/workflows/scripts/run-tests-enterprise-search.sh
+++ b/.github/workflows/scripts/run-tests-enterprise-search.sh
@@ -17,10 +17,10 @@ ip_es="$(service_ip elasticsearch)"
 ip_en="$(service_ip enterprise-search)"
 
 log 'Waiting for readiness of Elasticsearch'
-poll_ready "$cid_es" "http://${ip_es}:9200/" 'elastic:testpasswd'
+poll_ready "$cid_es" "http://${ip_es}:9200/" -u 'elastic:testpasswd'
 
 log 'Waiting for readiness of Enterprise Search'
-poll_ready "$cid_en" "http://${ip_en}:3002/api/ent/v1/internal/health" 'elastic:testpasswd'
+poll_ready "$cid_en" "http://${ip_en}:3002/api/ent/v1/internal/health" -u 'elastic:testpasswd'
 
 log 'Retrieving private key from Elasticsearch'
 response="$(curl "http://${ip_es}:9200/.ent-search-actastic-app_search_api_tokens_v2/_search?q=name:private-key" -s -u elastic:testpasswd)"