diff --git a/pkgs/servers/radarr/default.nix b/pkgs/servers/radarr/default.nix
index 75e20ecef05..e6211b7a147 100644
--- a/pkgs/servers/radarr/default.nix
+++ b/pkgs/servers/radarr/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, mono, libmediainfo, sqlite, curl, makeWrapper, icu, dotnetCorePackages, openssl, nixosTests }:
+{ lib, stdenv, fetchurl, mono, libmediainfo, sqlite, curl, makeWrapper, icu, dotnet-runtime, openssl, nixosTests, zlib }:
 
 let
   os = if stdenv.isDarwin then "osx" else "linux";
@@ -31,10 +31,10 @@ in stdenv.mkDerivation rec {
     mkdir -p $out/{bin,share/${pname}-${version}}
     cp -r * $out/share/${pname}-${version}/.
 
-    makeWrapper "${dotnetCorePackages.runtime_3_1}/bin/dotnet" $out/bin/Radarr \
+    makeWrapper "${dotnet-runtime}/bin/dotnet" $out/bin/Radarr \
       --add-flags "$out/share/${pname}-${version}/Radarr.dll" \
       --prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath [
-        curl sqlite libmediainfo mono openssl icu ]}
+        curl sqlite libmediainfo mono openssl icu zlib ]}
 
     runHook postInstall
   '';