diff --git a/docs/content/en/docs/reference/metrics.md b/docs/content/en/docs/reference/metrics.md
index fd7bddeda3d..0b45f27fd27 100644
--- a/docs/content/en/docs/reference/metrics.md
+++ b/docs/content/en/docs/reference/metrics.md
@@ -195,6 +195,10 @@ Policy filter metrics. For internal use only.
 | `op   ` | `add, add-container, delete, update` |
 | `subsys` | `pod-handlers, rthooks` |
 
+### `tetragon_process_cache_size`
+
+The size of the process cache
+
 ### `tetragon_process_loader_stats`
 
 Process Loader event statistics. For internal use only.
diff --git a/pkg/metrics/metricsconfig/initmetrics.go b/pkg/metrics/metricsconfig/initmetrics.go
index 5d883c5007e..5fa8e91c2ed 100644
--- a/pkg/metrics/metricsconfig/initmetrics.go
+++ b/pkg/metrics/metricsconfig/initmetrics.go
@@ -20,6 +20,7 @@ import (
 	"github.com/cilium/tetragon/pkg/metrics/syscallmetrics"
 	"github.com/cilium/tetragon/pkg/metrics/watchermetrics"
 	"github.com/cilium/tetragon/pkg/observer"
+	"github.com/cilium/tetragon/pkg/process"
 	"github.com/cilium/tetragon/pkg/version"
 	grpcmetrics "github.com/grpc-ecosystem/go-grpc-middleware/providers/prometheus"
 	"github.com/prometheus/client_golang/prometheus"
@@ -35,6 +36,7 @@ func initHealthMetrics(registry *prometheus.Registry) {
 	mapmetrics.InitMetrics(registry)
 	opcodemetrics.InitMetrics(registry)
 	policyfiltermetrics.InitMetrics(registry)
+	process.InitMetrics(registry)
 	ringbufmetrics.InitMetrics(registry)
 	ringbufqueuemetrics.InitMetrics(registry)
 	watchermetrics.InitMetrics(registry)