diff --git a/release.nix b/release.nix
index d3ddcf87..81cab0d5 100644
--- a/release.nix
+++ b/release.nix
@@ -68,6 +68,7 @@ let
           perlCatalystPluginStackTrace
           perlCatalystAuthenticationStoreDBIxClass
           perlCatalystViewTT
+          perlCatalystEngineHTTPPrefork
           perlXMLSimple
           perlIPCRun
           perlIOCompressBzip2
diff --git a/src/script/hydra_server.pl b/src/script/hydra_server.pl
index 11b3d365..4d0e9396 100755
--- a/src/script/hydra_server.pl
+++ b/src/script/hydra_server.pl
@@ -1,7 +1,7 @@
 #!/var/run/current-system/sw/bin/perl -w
 
 BEGIN {
-    $ENV{CATALYST_ENGINE} ||= 'HTTP';
+    $ENV{CATALYST_ENGINE} ||= 'HTTP::Prefork';
     $ENV{CATALYST_SCRIPT_GEN} = 32;
     require Catalyst::Engine::HTTP;
 }
@@ -63,6 +63,10 @@ Hydra->run( $port, $host, {
     restart_regex     => qr/$restart_regex/,
     restart_directory => $restart_directory,
     follow_symlinks   => $follow_symlinks,
+    min_servers       => 2,
+    max_servers       => 10,
+    min_spare_servers => 2,
+    max_spare_servers => 5,
 } );
 
 1;