diff --git a/data/grid5000/sites/lyon/servers/guix-builder.json b/data/grid5000/sites/lyon/servers/guix-builder.json
new file mode 100644
index 0000000000000000000000000000000000000000..38bef942b1ad14e67741d8e10187c15a2eadd656
--- /dev/null
+++ b/data/grid5000/sites/lyon/servers/guix-builder.json
@@ -0,0 +1,10 @@
+{
+  "kind": "virtual",
+  "network_adapters": {
+    "default": {
+      "ip": "172.16.63.133"
+    }
+  },
+  "type": "server",
+  "uid": "guix-builder"
+}
\ No newline at end of file
diff --git a/input/grid5000/sites/lyon/servers/virtual.yaml b/input/grid5000/sites/lyon/servers/virtual.yaml
index 15783ec58b40883fdc7f4e07113fb5cf6dd3a127..9aaba17472ba12d512df7dbefff13fcf1d0c0628 100644
--- a/input/grid5000/sites/lyon/servers/virtual.yaml
+++ b/input/grid5000/sites/lyon/servers/virtual.yaml
@@ -91,3 +91,6 @@ oxidized:
 guix-dev:
   kind: virtual
   network_adapters: {default: {ip: 172.16.63.132}}
+guix-builder:
+  kind: virtual
+  network_adapters: {default: {ip: 172.16.63.133}}