diff --git a/nix/os/devices/CFB4ED74/versions.nix b/nix/os/devices/CFB4ED74/versions.nix
index 57f56b6..207c7c8 100644
--- a/nix/os/devices/CFB4ED74/versions.nix
+++ b/nix/os/devices/CFB4ED74/versions.nix
@@ -1,4 +1,10 @@
 {
-  channelsNixosStable = "7e88992a8c7b2de0bcb89182d8686b27bd93e46a";
-  channelsNixosUnstable = "44b02b52ea6a49674f124f50009299f192ed78bb";
+  channelsNixosStable = {
+    ref = "nixos-18.09";
+    rev = "c2950341d038995bf46a7b72db961bb3d3e9ac12";
+  };
+  channelsNixosUnstable = {
+    ref = "nixos-unstable";
+    rev = "44b02b52ea6a49674f124f50009299f192ed78bb";
+  };
 }
diff --git a/nix/os/devices/steveej-t480s-work/versions.nix b/nix/os/devices/steveej-t480s-work/versions.nix
index 52734ca..19d8582 100644
--- a/nix/os/devices/steveej-t480s-work/versions.nix
+++ b/nix/os/devices/steveej-t480s-work/versions.nix
@@ -1,10 +1,10 @@
 {
   channelsNixosStable = {
     ref = "nixos-18.09";
-    rev = "7e88992a8c7b2de0bcb89182d8686b27bd93e46a";
+    rev = "c2950341d038995bf46a7b72db961bb3d3e9ac12";
   };
   channelsNixosUnstable = {
     ref = "nixos-unstable";
-    rev = "44b02b52ea6a49674f124f50009299f192ed78bb";
+    rev = "eebd1a9263716a04689a37b6537e50801d376b5e";
   };
 }