diff --git a/ops/nixos/lib/common.nix b/ops/nixos/lib/common.nix
index fe69ead189..ae5c78c1dd 100644
--- a/ops/nixos/lib/common.nix
+++ b/ops/nixos/lib/common.nix
@@ -193,13 +193,19 @@ in
       text = ''
         test -d /run/prometheus-textfile-exports || mkdir /run/prometheus-textfile-exports
         my_version_string="$(cat "$systemConfig/nixos-version")"
-        echo "nixos_running_system{version=\"$my_version_string\"} 1" > /run/prometheus-textfile-exports/running_system.prom
+        my_hash_string="$(readlink -f "$systemConfig" | grep -Eo '\b[0-9a-df-np-sv-z]{32}\b')"
+        echo "nixos_running_system{version=\"$my_version_string\", hash=\"$my_hash_string\"} 1" > /run/prometheus-textfile-exports/running_system.prom
+
+        my_version_string="$(cat "/run/booted-system/nixos-version")"
+        my_hash_string="$(readlink -f "/run/booted-system" | grep -Eo '\b[0-9a-df-np-sv-z]{32}\b')"
+        echo "nixos_booted_system{version=\"$my_version_string\", hash=\"$my_hash_string\"} 1" > /run/prometheus-textfile-exports/booted_system.prom
       '';
     };
     boot.postBootCommands = lib.mkAfter ''
       test -d /run/prometheus-textfile-exports || mkdir /run/prometheus-textfile-exports
       my_version_string="$(cat "/run/booted-system/nixos-version")"
-      echo "nixos_booted_system{version=\"$my_version_string\"} 1" > /run/prometheus-textfile-exports/booted_system.prom
+      my_hash_string="$(readlink -f "/run/booted-system" | grep -Eo '\b[0-9a-df-np-sv-z]{32}\b')"
+      echo "nixos_booted_system{version=\"$my_version_string\", hash=\"$my_hash_string\"} 1" > /run/prometheus-textfile-exports/booted_system.prom
     '';
 
     system.nixos.tags = lib.mkBefore [