diff --git a/.versions/nixpkgs-unstable.json b/.versions/nixpkgs-unstable.json
index e763f07..0cd80f9 100644
--- a/.versions/nixpkgs-unstable.json
+++ b/.versions/nixpkgs-unstable.json
@@ -1,7 +1,7 @@
 {
   "url": "https://github.com/NixOS/nixpkgs-channels.git",
-  "rev": "39247f8d04c04b3ee629a1f85aeedd582bf41cac",
-  "date": "2020-04-06T00:25:11+02:00",
-  "sha256": "1q7asvk73w7287d2ghgya2hnvn01szh65n8xczk4x2b169c5rfv0",
+  "rev": "b61999e4ad60c351b4da63ae3ff43aae3c0bbdfb",
+  "date": "2020-04-16T08:43:36-04:00",
+  "sha256": "0cggpdks4qscyirqwfprgdl91mlhjlw24wkg0riapk5f2g2llbpq",
   "fetchSubmodules": false
 }
diff --git a/.versions/nixpkgs.json b/.versions/nixpkgs.json
index cc564a9..f1a8f8c 100644
--- a/.versions/nixpkgs.json
+++ b/.versions/nixpkgs.json
@@ -1,7 +1,7 @@
 {
   "url": "https://github.com/NixOS/nixpkgs-channels.git",
-  "rev": "e10c65cdb35b6a66491e47e5a85f5d456b4f4eea",
-  "date": "2020-04-05T01:34:21+02:00",
-  "sha256": "19csb2s3wyav83zcw9dw488zk2fnz6wcxxz8q6hy43dbph86hxwm",
+  "rev": "b67bc34d4e3de1e89b8bb7cd6e375ba44f1ae8ca",
+  "date": "2020-04-15T22:11:06+01:00",
+  "sha256": "1q9a64bl5afflgpa2iaw1q7z7s08c8xq9w6lndlnc5c3siajrp8v",
   "fetchSubmodules": false
 }