diff --git a/package-lock.json b/package-lock.json
index 0182d55..1febe58 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -37,6 +37,7 @@
                 "eslint-plugin-jsdoc": "37.0.3",
                 "express": "4.17.1",
                 "socket.io": "^2.5.0",
+                "socket.io-prometheus-metrics": "^1.0.6",
                 "ts-node-dev": "^1.1.8",
                 "typescript": "4.2.3"
             },
@@ -2924,6 +2925,11 @@
                 "node": ">=8"
             }
         },
+        "node_modules/bintrees": {
+            "version": "1.0.2",
+            "resolved": "https://registry.npmjs.org/bintrees/-/bintrees-1.0.2.tgz",
+            "integrity": "sha512-VOMgTMwjAaUG580SXn3LacVgjurrbMme7ZZNYGSSV7mmtY6QQRh0Eg3pwIcntQ77DErK1L0NxkbetjcoXzVwKw=="
+        },
         "node_modules/blob": {
             "version": "0.0.5",
             "resolved": "https://registry.npmjs.org/blob/-/blob-0.0.5.tgz",
@@ -5710,6 +5716,17 @@
                 "node": ">=0.4.0"
             }
         },
+        "node_modules/prom-client": {
+            "version": "11.5.3",
+            "resolved": "https://registry.npmjs.org/prom-client/-/prom-client-11.5.3.tgz",
+            "integrity": "sha512-iz22FmTbtkyL2vt0MdDFY+kWof+S9UB/NACxSn2aJcewtw+EERsen0urSkZ2WrHseNdydsvcxCTAnPcSMZZv4Q==",
+            "dependencies": {
+                "tdigest": "^0.1.1"
+            },
+            "engines": {
+                "node": ">=6.1"
+            }
+        },
         "node_modules/proxy-addr": {
             "version": "2.0.7",
             "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
@@ -6197,6 +6214,16 @@
                 "ms": "^2.1.1"
             }
         },
+        "node_modules/socket.io-prometheus-metrics": {
+            "version": "1.0.6",
+            "resolved": "https://registry.npmjs.org/socket.io-prometheus-metrics/-/socket.io-prometheus-metrics-1.0.6.tgz",
+            "integrity": "sha512-rG1XIWuFRysVE/VE2ikJcYbv1ZqcY5IZ5CJOoih2MMiVx7GujwvxF1olcpDlQ/iGGryCXC/FRoBAB00Qnzsntw==",
+            "dependencies": {
+                "express": "^4.16.4",
+                "prom-client": "^11.2.1",
+                "socket.io": "^2.2.0"
+            }
+        },
         "node_modules/socket.io/node_modules/debug": {
             "version": "4.1.1",
             "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
@@ -6345,6 +6372,14 @@
                 "node": ">=6"
             }
         },
+        "node_modules/tdigest": {
+            "version": "0.1.2",
+            "resolved": "https://registry.npmjs.org/tdigest/-/tdigest-0.1.2.tgz",
+            "integrity": "sha512-+G0LLgjjo9BZX2MfdvPfH+MKLCrxlXSYec5DaPYP1fe6Iyhf0/fSmJ0bFiZ1F8BT6cGXl2LpltQptzjXKWEkKA==",
+            "dependencies": {
+                "bintrees": "1.0.2"
+            }
+        },
         "node_modules/terser": {
             "version": "5.15.0",
             "resolved": "https://registry.npmjs.org/terser/-/terser-5.15.0.tgz",
@@ -8964,6 +8999,11 @@
             "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.2.0.tgz",
             "integrity": "sha512-jDctJ/IVQbZoJykoeHbhXpOlNBqGNcwXJKJog42E5HDPUwQTSdjCHdihjj0DlnheQ7blbT6dHOafNAiS8ooQKA=="
         },
+        "bintrees": {
+            "version": "1.0.2",
+            "resolved": "https://registry.npmjs.org/bintrees/-/bintrees-1.0.2.tgz",
+            "integrity": "sha512-VOMgTMwjAaUG580SXn3LacVgjurrbMme7ZZNYGSSV7mmtY6QQRh0Eg3pwIcntQ77DErK1L0NxkbetjcoXzVwKw=="
+        },
         "blob": {
             "version": "0.0.5",
             "resolved": "https://registry.npmjs.org/blob/-/blob-0.0.5.tgz",
@@ -11005,6 +11045,14 @@
             "resolved": "https://registry.npmjs.org/progress/-/progress-2.0.3.tgz",
             "integrity": "sha512-7PiHtLll5LdnKIMw100I+8xJXR5gW2QwWYkT6iJva0bXitZKa/XMrSbdmg3r2Xnaidz9Qumd0VPaMrZlF9V9sA=="
         },
+        "prom-client": {
+            "version": "11.5.3",
+            "resolved": "https://registry.npmjs.org/prom-client/-/prom-client-11.5.3.tgz",
+            "integrity": "sha512-iz22FmTbtkyL2vt0MdDFY+kWof+S9UB/NACxSn2aJcewtw+EERsen0urSkZ2WrHseNdydsvcxCTAnPcSMZZv4Q==",
+            "requires": {
+                "tdigest": "^0.1.1"
+            }
+        },
         "proxy-addr": {
             "version": "2.0.7",
             "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
@@ -11391,6 +11439,16 @@
                 }
             }
         },
+        "socket.io-prometheus-metrics": {
+            "version": "1.0.6",
+            "resolved": "https://registry.npmjs.org/socket.io-prometheus-metrics/-/socket.io-prometheus-metrics-1.0.6.tgz",
+            "integrity": "sha512-rG1XIWuFRysVE/VE2ikJcYbv1ZqcY5IZ5CJOoih2MMiVx7GujwvxF1olcpDlQ/iGGryCXC/FRoBAB00Qnzsntw==",
+            "requires": {
+                "express": "^4.16.4",
+                "prom-client": "^11.2.1",
+                "socket.io": "^2.2.0"
+            }
+        },
         "source-map": {
             "version": "0.5.7",
             "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
@@ -11493,6 +11551,14 @@
             "integrity": "sha512-GNzQvQTOIP6RyTfE2Qxb8ZVlNmw0n88vp1szwWRimP02mnTsx3Wtn5qRdqY9w2XduFNUgvOwhNnQsjwCp+kqaQ==",
             "peer": true
         },
+        "tdigest": {
+            "version": "0.1.2",
+            "resolved": "https://registry.npmjs.org/tdigest/-/tdigest-0.1.2.tgz",
+            "integrity": "sha512-+G0LLgjjo9BZX2MfdvPfH+MKLCrxlXSYec5DaPYP1fe6Iyhf0/fSmJ0bFiZ1F8BT6cGXl2LpltQptzjXKWEkKA==",
+            "requires": {
+                "bintrees": "1.0.2"
+            }
+        },
         "terser": {
             "version": "5.15.0",
             "resolved": "https://registry.npmjs.org/terser/-/terser-5.15.0.tgz",
diff --git a/package.json b/package.json
index dbfca21..bcef018 100644
--- a/package.json
+++ b/package.json
@@ -41,6 +41,7 @@
         "eslint-plugin-jsdoc": "37.0.3",
         "express": "4.17.1",
         "socket.io": "^2.5.0",
+        "socket.io-prometheus-metrics": "^1.0.6",
         "ts-node-dev": "^1.1.8",
         "typescript": "4.2.3"
     },
diff --git a/src/index.ts b/src/index.ts
index 0134284..998beb4 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,6 +2,7 @@ import debug from "debug";
 import express from "express";
 import http from "http";
 import socketIO from "socket.io";
+import * as prometheus from "socket.io-prometheus-metrics";
 
 const serverDebug = debug("server");
 const ioDebug = debug("io");
@@ -41,6 +42,11 @@ const io = socketIO(server, {
   },
 });
 
+// listens on host:9090/metrics
+prometheus.metrics(io, {
+  collectDefaultMetrics: true
+});
+
 io.on("connection", (socket) => {
   ioDebug("connection established!");
   io.to(`${socket.id}`).emit("init-room");