diff --git a/Cargo.lock b/Cargo.lock
index 727d76a61..6a1a8a647 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -522,7 +522,7 @@ dependencies = [
  "futures-lite",
  "parking",
  "polling",
- "rustix",
+ "rustix 1.1.4",
  "slab",
  "windows-sys 0.61.2",
 ]
@@ -4714,6 +4714,12 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.4.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d26c52dbd32dccf2d10cac7725f8eae5296885fb5703b261f7d0a0739ec807ab"
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.12.1"
@@ -5460,7 +5466,7 @@ dependencies = [
  "concurrent-queue",
  "hermit-abi",
  "pin-project-lite",
- "rustix",
+ "rustix 1.1.4",
  "windows-sys 0.61.2",
 ]
 
@@ -5628,6 +5634,28 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "procfs"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc5b72d8145275d844d4b5f6d4e1eef00c8cd889edb6035c21675d1bb1f45c9f"
+dependencies = [
+ "bitflags 2.11.1",
+ "hex",
+ "procfs-core",
+ "rustix 0.38.44",
+]
+
+[[package]]
+name = "procfs-core"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "239df02d8349b06fc07398a3a1697b06418223b1c7725085e801e7c0fc6a12ec"
+dependencies = [
+ "bitflags 2.11.1",
+ "hex",
+]
+
 [[package]]
 name = "prometheus"
 version = "0.14.0"
@@ -5637,8 +5665,10 @@ dependencies = [
  "cfg-if",
  "fnv",
  "lazy_static",
+ "libc",
  "memchr",
  "parking_lot",
+ "procfs",
  "protobuf",
  "thiserror 2.0.18",
 ]
@@ -6386,6 +6416,19 @@ dependencies = [
  "nom",
 ]
 
+[[package]]
+name = "rustix"
+version = "0.38.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fdb5bc1ae2baa591800df16c9ca78619bf65c0488b41b96ccec5d11220d8c154"
+dependencies = [
+ "bitflags 2.11.1",
+ "errno",
+ "libc",
+ "linux-raw-sys 0.4.15",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "rustix"
 version = "1.1.4"
@@ -6395,7 +6438,7 @@ dependencies = [
  "bitflags 2.11.1",
  "errno",
  "libc",
- "linux-raw-sys",
+ "linux-raw-sys 0.12.1",
  "windows-sys 0.60.2",
 ]
 
@@ -7149,7 +7192,7 @@ dependencies = [
  "fastrand",
  "getrandom 0.4.2",
  "once_cell",
- "rustix",
+ "rustix 1.1.4",
  "windows-sys 0.60.2",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 71effe4b1..e13475448 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -95,7 +95,7 @@ spawned-rt = "0.5.0"
 tokio = "1.0"
 tokio-util = "0.7"
 
-prometheus = "0.14"
+prometheus = { version = "0.14", features = ["process"] }
 
 clap = { version = "4.3", features = ["derive", "env"] }
 
diff --git a/crates/common/metrics/src/gather.rs b/crates/common/metrics/src/gather.rs
index c4e727e0c..8912d18e6 100644
--- a/crates/common/metrics/src/gather.rs
+++ b/crates/common/metrics/src/gather.rs
@@ -27,3 +27,21 @@ pub fn gather_default_metrics() -> Result<String, GatherError> {
 
     Ok(res)
 }
+
+/// The process collector comes from the `prometheus` crate's `process`
+/// feature, which registers it with the default registry on Linux only.
+/// Dashboards read the node's memory from it, so dropping the feature would
+/// leave them blank without any build failing.
+#[cfg(all(test, target_os = "linux"))]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn the_default_registry_serves_the_process_metrics() {
+        let metrics = gather_default_metrics().unwrap();
+        assert!(
+            metrics.contains("process_resident_memory_bytes"),
+            "{metrics}"
+        );
+    }
+}
diff --git a/docs/metrics.md b/docs/metrics.md
index 1ea07953f..7107778d1 100644
--- a/docs/metrics.md
+++ b/docs/metrics.md
@@ -13,6 +13,13 @@ The Lean Chain's metrics follow [the leanMetrics specification](https://github.c
 | `lean_node_info` | Gauge | Node information (always 1) | On node start | name, version | ✅ |
 | `lean_node_start_time_seconds` | Gauge | Start timestamp | On node start | | ✅ |
 
+On Linux the endpoint also serves the `prometheus` crate's process collector,
+read from `/proc/self` at each scrape: `process_resident_memory_bytes`,
+`process_virtual_memory_bytes`, `process_cpu_seconds_total`,
+`process_open_fds`, `process_max_fds`, `process_threads` and
+`process_start_time_seconds`. They are not part of the leanMetrics spec, and
+other platforms do not export them.
+
 
 ## PQ Signature Metrics