diff --git a/go.mod b/go.mod
index d9ab55bdf521..11f790219ddd 100644
--- a/go.mod
+++ b/go.mod
@@ -39,7 +39,7 @@ require (
 	github.com/klauspost/pgzip v1.2.6
 	github.com/minio/minio-go/v7 v7.0.66
 	github.com/pkg/errors v0.9.1
-	github.com/prometheus/client_golang v1.18.0
+	github.com/prometheus/client_golang v1.19.0
 	github.com/prometheus/client_model v0.6.0
 	github.com/prometheus/common v0.48.0
 	github.com/robfig/cron/v3 v3.0.1
diff --git a/go.sum b/go.sum
index 214d45a0ac41..90f9c625fcb6 100644
--- a/go.sum
+++ b/go.sum
@@ -862,8 +862,8 @@ github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5Fsn
 github.com/prometheus/client_golang v1.7.1/go.mod h1:PY5Wy2awLA44sXw4AOSfFBetzPP4j5+D6mVACh+pe2M=
 github.com/prometheus/client_golang v1.11.0/go.mod h1:Z6t4BnS23TR94PD6BsDNk8yVqroYurpAkEiz0P2BEV0=
 github.com/prometheus/client_golang v1.12.1/go.mod h1:3Z9XVyYiZYEO+YQWt3RD2R3jrbd179Rt297l4aS6nDY=
-github.com/prometheus/client_golang v1.18.0 h1:HzFfmkOzH5Q8L8G+kSJKUx5dtG87sewO+FoDDqP5Tbk=
-github.com/prometheus/client_golang v1.18.0/go.mod h1:T+GXkCk5wSJyOqMIzVgvvjFDlkOQntgjkJWKrN5txjA=
+github.com/prometheus/client_golang v1.19.0 h1:ygXvpU1AoN1MhdzckN+PyD9QJOSD4x7kmXYlnfbA6JU=
+github.com/prometheus/client_golang v1.19.0/go.mod h1:ZRM9uEAypZakd+q/x7+gmsvXdURP+DABIEIjnmDdp+k=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
diff --git a/workflow/controller/operator_metrics_test.go b/workflow/controller/operator_metrics_test.go
index 5b5d4dedd8d4..13900a0c822f 100644
--- a/workflow/controller/operator_metrics_test.go
+++ b/workflow/controller/operator_metrics_test.go
@@ -3,6 +3,7 @@ package controller
 import (
 	"context"
 	"fmt"
+	"regexp"
 	"testing"
 	"time"
 
@@ -15,6 +16,8 @@ import (
 	"github.com/argoproj/argo-workflows/v3/pkg/apis/workflow/v1alpha1"
 )
 
+var space = regexp.MustCompile(`\s+`)
+
 var basicMetric = `
 apiVersion: argoproj.io/v1alpha1
 kind: Workflow
@@ -237,7 +240,10 @@ func getMetricStringValue(metric prometheus.Metric) (string, error) {
 	if err != nil {
 		return "", err
 	}
-	return fmt.Sprintf("%v", metricString.String()), nil
+
+	// Workaround for https://github.com/prometheus/client_model/issues/83
+	normalizedString := space.ReplaceAllString(metricString.String(), " ")
+	return normalizedString, nil
 }
 
 func getMetricGaugeValue(metric prometheus.Metric) (*float64, error) {