diff --git a/.versions/krops.nix b/.versions/krops.nix
new file mode 100644
index 0000000..da8291c
--- /dev/null
+++ b/.versions/krops.nix
@@ -0,0 +1,7 @@
+{
+  "url": "https://cgit.krebsco.de/krops",
+  "rev": "55aa2c77ce8183f3d2b24f54efa33ab6a42e1e02",
+  "date": "2020-04-19T01:06:20+02:00",
+  "sha256": "00rvx9h596ync8wgic6xc9srzajzm28wlp9q7mv4z0jsb27l5bj8",
+  "fetchSubmodules": false
+}