diff --git a/pkgs/servers/web-apps/snipe-it/default.nix b/pkgs/servers/web-apps/snipe-it/default.nix
index cf72123ba1e8..3e3ac6fde11b 100644
--- a/pkgs/servers/web-apps/snipe-it/default.nix
+++ b/pkgs/servers/web-apps/snipe-it/default.nix
@@ -18,13 +18,13 @@ let
 
 in package.override rec {
   pname = "snipe-it";
-  version = "6.0.2";
+  version = "6.0.4";
 
   src = fetchFromGitHub {
     owner = "snipe";
     repo = pname;
     rev = "v${version}";
-    sha256 = "174s2h3whim98d9h8l4qr3vpk199zfxgwyys3d3gblpx1m5mr07k";
+    sha256 = "06h8rnk8q85f0z0a1q0j010kzs4z2k5sxvi06avk7ndpkrisv4wz";
   };
 
   meta = with lib; {
diff --git a/pkgs/servers/web-apps/snipe-it/update.sh b/pkgs/servers/web-apps/snipe-it/update.sh
index cf06f81b0781..3e5f70f1a587 100755
--- a/pkgs/servers/web-apps/snipe-it/update.sh
+++ b/pkgs/servers/web-apps/snipe-it/update.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#! nix-shell -i bash -p nix curl jq nix-update
+#! nix-shell -I nixpkgs=../../../.. -i bash -p nix curl jq nix-update
 
 # check if composer2nix is installed
 if ! command -v composer2nix &> /dev/null; then
@@ -7,7 +7,7 @@ if ! command -v composer2nix &> /dev/null; then
   exit 1
 fi
 
-CURRENT_VERSION=$(nix eval --raw '(with import ../../../.. {}; snipe-it.version)')
+CURRENT_VERSION=$(nix eval -f ../../../.. --raw snipe-it.version)
 TARGET_VERSION_REMOTE=$(curl ${GITHUB_TOKEN:+" -u \":$GITHUB_TOKEN\""} https://api.github.com/repos/snipe/snipe-it/releases/latest | jq -r ".tag_name")
 TARGET_VERSION=${TARGET_VERSION_REMOTE:1}
 SNIPE_IT=https://github.com/snipe/snipe-it/raw/$TARGET_VERSION_REMOTE