chore: update

.versions/nixpkgs-unstable.json

@@ -1,9 +1,9 @@
 {
   "url": "https://github.com/NixOS/nixpkgs.git",
-  "rev": "c23146505c35a07bafbecf36af4f9ebde2bb7dfd",
-  "date": "2021-05-03T19:49:00-07:00",
-  "path": "/nix/store/wq0bmvjvrv8yh6v6qdq4cg3jk3za8j1y-nixpkgs",
-  "sha256": "15d0pwdf0xlpnvkdsg3arvx3v8jyi2ji7r9w8slrpdgfgrbfak4q",
+  "rev": "61f412a75ff77d32c9cc701742bd146cce9cab42",
+  "date": "2021-05-20T13:14:07+02:00",
+  "path": "/nix/store/hnw7m7k3g7q8sffhray5rqminzjq0pps-nixpkgs",
+  "sha256": "1c8mqf3cph5ic33k8sanpyvlf2g5wl9wfqhp0gcrdp0zg3w6adk0",
   "fetchSubmodules": false,
   "deepClone": false,
   "leaveDotGit": false

.versions/nixpkgs.json

@@ -1,9 +1,9 @@
 {
   "url": "https://github.com/NixOS/nixpkgs.git",
-  "rev": "4a154d476238163eda54475d02382394b202961a",
-  "date": "2021-05-03T12:19:22-05:00",
-  "path": "/nix/store/3s77pfr5ja69wn7dqysv3fn669l54w4w-nixpkgs",
-  "sha256": "1fbmjdjv7s76daa51if50bpb7rmdw8mh4bs1zf37lqdn8fli3yk3",
+  "rev": "33824cdf8e4fec30c5b9ddc91b18991c3c375227",
+  "date": "2021-05-18T19:08:44-04:00",
+  "path": "/nix/store/s3f1q2a5hn60jdnz8h66z7yahrmzifin-nixpkgs",
+  "sha256": "1sad0x998k3iid2vp57kv4skvf90yh4gbs61dv3p45c2qi3sql46",
   "fetchSubmodules": false,
   "deepClone": false,
   "leaveDotGit": false

.versions/retiolum.json

@@ -1,9 +1,9 @@
 {
   "url": "https://github.com/krebs/retiolum",
-  "rev": "890364eba07602127f2dd96c7e1dac7d5d5e85e9",
-  "date": "2021-05-03T15:02:17+02:00",
-  "path": "/nix/store/3wnxdlif1dhc9cqasgynr26v8nn8l255-retiolum",
-  "sha256": "115z5406x81473jg0qfz0qzajgq8rnjb75b438q6yk8qnrmb3r6v",
+  "rev": "db8f1c9dd34a00f8606b165b2d48b44e621349e3",
+  "date": "2021-05-12T07:02:17+02:00",
+  "path": "/nix/store/rp2c778z03bvy23p3k0rx9xh5a129jla-retiolum",
+  "sha256": "1ksxrdjiiwfdlfv0y498yfw4jqfpm3affc7bdaz094hp27wy2mqw",
   "fetchSubmodules": false,
   "deepClone": false,
   "leaveDotGit": false