diff --git a/pkgs/applications/audio/pianoteq/default.nix b/pkgs/applications/audio/pianoteq/default.nix
index 55ab6261aa9e..441a37c78af1 100644
--- a/pkgs/applications/audio/pianoteq/default.nix
+++ b/pkgs/applications/audio/pianoteq/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, curl, jq, xorg, alsa-lib, freetype, p7zip, autoPatchelfHook, writeShellScript, zlib, libjack2, makeWrapper }:
+{ lib, stdenv, curl, jq, htmlq, xorg, alsa-lib, freetype, p7zip, autoPatchelfHook, writeShellScript, zlib, libjack2, makeWrapper }:
 let
   versionForFile = v: builtins.replaceStrings ["."] [""] v;
 
@@ -93,24 +93,32 @@ let
     fetchWithCurlScript {
       inherit name sha256;
       script = ''
+        html=$(
           "''${curl[@]}" --silent --request GET \
             --cookie cookies \
             --header "accept: */*" \
-            https://www.modartt.com/ -o /dev/null
+            'https://www.modartt.com/try?file=${name}'
+        )
 
-          json=$(
-            "''${curl[@]}" --silent --request POST \
-            --cookie cookies \
-            --header "modartt-json: request" \
-            --header "origin: https://www.modartt.com" \
-            --header "content-type: application/json; charset=UTF-8" \
-            --header "accept: application/json, text/javascript, */*" \
-            --data-raw '{"file": "${name}", "get": "url"}' \
-            https://www.modartt.com/api/0/download
-          )
+        signature="$(echo "$html" | ${htmlq}/bin/htmlq '#download-form' --attribute action | cut -f2 -d'&' | cut -f2 -d=)"
 
-          url=$(echo $json | ${jq}/bin/jq -r .url)
-          "''${curl[@]}" --progress-bar --cookie cookies -o $out "$url"
+        json=$(
+          "''${curl[@]}" --silent --request POST \
+          --cookie cookies \
+          --header "modartt-json: request" \
+          --header "origin: https://www.modartt.com" \
+          --header "content-type: application/json; charset=UTF-8" \
+          --header "accept: application/json, text/javascript, */*" \
+          --data-raw '{"file": "${name}", "get": "url", "signature": "'"$signature"'"}' \
+          https://www.modartt.com/api/0/download
+        )
+
+        url=$(echo $json | ${jq}/bin/jq -r .url)
+        if [ "$url" == "null"  ]; then
+          echo "Could not get download URL, open an issue on https://github.com/NixOS/nixpkgs"
+          return 1
+        fi
+        "''${curl[@]}" --progress-bar --cookie cookies -o $out "$url"
       '';
     };
 
@@ -160,20 +168,20 @@ in {
   # TODO currently can't install more than one because `lame` clashes
   stage-trial = mkPianoteq rec {
     name = "stage-trial";
-    version = "8.0.5";
+    version = "8.0.8";
     archdir = "x86-64bit";
     src = fetchPianoteqTrial {
       name = "pianoteq_stage_linux_trial_v${versionForFile version}.7z";
-      sha256 = "sha256-9Lo4e1SM1gw2/+TmpDUdZCOQcHEpT/aaG6P80/GRPQY=";
+      sha256 = "sha256-dp0bTzzh4aQ2KQ3z9zk+3meKQY4YRYQ86rccHd3+hAQ=";
     };
   };
   standard-trial = mkPianoteq rec {
     name = "standard-trial";
-    version = "8.0.5";
+    version = "8.0.8";
     archdir = "x86-64bit";
     src = fetchPianoteqTrial {
       name = "pianoteq_linux_trial_v${versionForFile version}.7z";
-      sha256 = "sha256-qxViVIbld8zTMj1+TIfOsIOhmujOGJux2/u2J4hvsqw=";
+      sha256 = "sha256-LSrnrjkEhsX9TirUUFs9tNqH2A3cTt3I7YTfcTT6EP8=";
     };
   };
   stage-6 = mkPianoteq rec {