diff --git a/internal/prometheus/constants.go b/internal/prometheus/constants.go
new file mode 100644
index 000000000..32de1f1a4
--- /dev/null
+++ b/internal/prometheus/constants.go
@@ -0,0 +1,7 @@
+package prometheus
+
+const (
+	Namespace         = "image_builder"
+	ComposerSubsystem = "composer"
+	WorkerSubsystem   = "worker"
+)
diff --git a/internal/prometheus/http_metrics.go b/internal/prometheus/http_metrics.go
index bcc5c21a2..e49830d73 100644
--- a/internal/prometheus/http_metrics.go
+++ b/internal/prometheus/http_metrics.go
@@ -5,16 +5,11 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promauto"
 )
 
-const (
-	namespace = "image_builder"
-	subsystem = "composer"
-)
-
 var (
 	TotalRequests = promauto.NewCounter(prometheus.CounterOpts{
 		Name:      "total_requests",
-		Namespace: namespace,
-		Subsystem: subsystem,
+		Namespace: Namespace,
+		Subsystem: ComposerSubsystem,
 		Help:      "total number of http requests made to osbuild-composer",
 	})
 )
@@ -23,8 +18,8 @@ var (
 	// update this to count all 500s
 	ComposeFailures = promauto.NewCounter(prometheus.CounterOpts{
 		Name:      "total_failed_compose_requests",
-		Namespace: namespace,
-		Subsystem: subsystem,
+		Namespace: Namespace,
+		Subsystem: ComposerSubsystem,
 		Help:      "total number of failed compose requests",
 	})
 )
@@ -32,8 +27,8 @@ var (
 var (
 	ComposeRequests = promauto.NewCounter(prometheus.CounterOpts{
 		Name:      "total_compose_requests",
-		Namespace: namespace,
-		Subsystem: subsystem,
+		Namespace: Namespace,
+		Subsystem: ComposerSubsystem,
 		Help:      "total number of compose requests made to osbuild-composer",
 	})
 )
@@ -41,8 +36,8 @@ var (
 var (
 	httpDuration = promauto.NewHistogramVec(prometheus.HistogramOpts{
 		Name:      "http_duration_seconds",
-		Namespace: namespace,
-		Subsystem: subsystem,
+		Namespace: Namespace,
+		Subsystem: ComposerSubsystem,
 		Help:      "Duration of HTTP requests.",
 		Buckets:   []float64{.025, .05, .075, .1, .2, .5, .75, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 20},
 	}, []string{"path"})
diff --git a/internal/prometheus/job_metrics.go b/internal/prometheus/job_metrics.go
index 607ba4dba..32f5fddfa 100644
--- a/internal/prometheus/job_metrics.go
+++ b/internal/prometheus/job_metrics.go
@@ -8,13 +8,11 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promauto"
 )
 
-const workerSubsystem = "worker"
-
 var (
 	TotalJobs = promauto.NewCounterVec(prometheus.CounterOpts{
 		Name:      "total_jobs",
-		Namespace: namespace,
-		Subsystem: workerSubsystem,
+		Namespace: Namespace,
+		Subsystem: WorkerSubsystem,
 		Help:      "Total jobs",
 	}, []string{"type", "status", "tenant", "arch"})
 )
@@ -22,8 +20,8 @@ var (
 var (
 	PendingJobs = promauto.NewGaugeVec(prometheus.GaugeOpts{
 		Name:      "pending_jobs",
-		Namespace: namespace,
-		Subsystem: workerSubsystem,
+		Namespace: Namespace,
+		Subsystem: WorkerSubsystem,
 		Help:      "Currently pending jobs",
 	}, []string{"type", "tenant"})
 )
@@ -31,8 +29,8 @@ var (
 var (
 	RunningJobs = promauto.NewGaugeVec(prometheus.GaugeOpts{
 		Name:      "running_jobs",
-		Namespace: namespace,
-		Subsystem: workerSubsystem,
+		Namespace: Namespace,
+		Subsystem: WorkerSubsystem,
 		Help:      "Currently running jobs",
 	}, []string{"type", "tenant"})
 )
@@ -40,8 +38,8 @@ var (
 var (
 	JobDuration = promauto.NewHistogramVec(prometheus.HistogramOpts{
 		Name:      "job_duration_seconds",
-		Namespace: namespace,
-		Subsystem: workerSubsystem,
+		Namespace: Namespace,
+		Subsystem: WorkerSubsystem,
 		Help:      "Duration spent by workers on a job.",
 		Buckets:   []float64{.1, .2, .5, 1, 2, 4, 8, 16, 32, 40, 48, 64, 96, 128, 160, 192, 224, 256, 320, 382, 448, 512, 640, 768, 896, 1024, 1280, 1536, 1792, 2049},
 	}, []string{"type", "status", "tenant", "arch"})
@@ -50,8 +48,8 @@ var (
 var (
 	JobWaitDuration = promauto.NewHistogramVec(prometheus.HistogramOpts{
 		Name:      "job_wait_duration_seconds",
-		Namespace: namespace,
-		Subsystem: workerSubsystem,
+		Namespace: Namespace,
+		Subsystem: WorkerSubsystem,
 		Help:      "Duration a job spends on the queue.",
 		Buckets:   []float64{.1, .2, .5, 1, 2, 4, 8, 16, 32, 40, 48, 64, 96, 128, 160, 192, 224, 256, 320, 382, 448, 512, 640, 768, 896, 1024, 1280, 1536, 1792, 2049},
 	}, []string{"type", "tenant"})