diff --git a/publish.sh b/publish.sh
index a52c455..816a48c 100755
--- a/publish.sh
+++ b/publish.sh
@@ -7,7 +7,7 @@ if test -f /bsd # on OpenBSD
 then
     cd issues && make && cd ../
 else
-    nix-shell -p gnumake libxml2 --run "cd issues && make"
+    nix shell nixpkgs#gnumake nixpkgs#libxml2 -c /bin/sh -c "cd issues && make"
 fi
 rclone sync -v --size-only \
 	--sftp-set-modtime=false \