diff --git a/quickget b/quickget
index ab9cd3c..3ddc117 100755
--- a/quickget
+++ b/quickget
@@ -842,7 +842,7 @@ function releases_nitrux() {
 function releases_nixos() {
     # Lists unstable plus the two most recent releases
     #shellcheck disable=SC2046
-    echo unstable $(web_pipe "https://nix-channels.s3.amazonaws.com/?delimiter=/" | grep -o -P '(?<=<Key>nixos-)[0-9]+.[0-9]+(?=</Key>)' | sort -nr | head -n +2)
+    echo unstable $(web_pipe "https://nix-channels.s3.amazonaws.com/?delimiter=/" | grep -o -E 'nixos-[[:digit:]]+\.[[:digit:]]+' | cut -d- -f2 | sort -nru | head -n +2)
 }
 
 function editions_nixos() {