diff --git a/src/lib/Hydra/Controller/User.pm b/src/lib/Hydra/Controller/User.pm
index 49c49c84..852dd16d 100644
--- a/src/lib/Hydra/Controller/User.pm
+++ b/src/lib/Hydra/Controller/User.pm
@@ -143,7 +143,7 @@ sub google_login :Path('/google-login') Args(0) {
 
     error($c, "Logging in via Google is not enabled.") unless $c->config->{enable_google_login};
 
-    my $ua = new LWP::UserAgent;
+    my $ua = LWP::UserAgent->new();
     my $response = $ua->post(
         'https://www.googleapis.com/oauth2/v3/tokeninfo',
         { id_token => ($c->stash->{params}->{id_token} // die "No token."),
@@ -171,7 +171,7 @@ sub github_login :Path('/github-login') Args(0) {
     };
     die "No github secret configured" unless $client_secret;
 
-    my $ua = new LWP::UserAgent;
+    my $ua = LWP::UserAgent->new();
     my $response = $ua->post(
         'https://github.com/login/oauth/access_token',
         {
diff --git a/src/lib/Hydra/Helper/Nix.pm b/src/lib/Hydra/Helper/Nix.pm
index 5e055e4f..7ab4ab60 100644
--- a/src/lib/Hydra/Helper/Nix.pm
+++ b/src/lib/Hydra/Helper/Nix.pm
@@ -44,7 +44,7 @@ sub getHydraConfig {
     my $conf = $ENV{"HYDRA_CONFIG"} || (Hydra::Model::DB::getHydraPath . "/hydra.conf");
     my %opts = (%Hydra::Config::configGeneralOpts, -ConfigFile => $conf);
     if (-f $conf) {
-        my %h = new Config::General(%opts)->getall;
+        my %h = Config::General->new(%opts)->getall;
 
         $hydraConfig = \%h;
     } else {
diff --git a/src/lib/Hydra/View/NixClosure.pm b/src/lib/Hydra/View/NixClosure.pm
index 51376699..d906dce3 100644
--- a/src/lib/Hydra/View/NixClosure.pm
+++ b/src/lib/Hydra/View/NixClosure.pm
@@ -11,7 +11,7 @@ sub process {
 
     my @storePaths = @{$c->stash->{storePaths}};
 
-    my $fh = new IO::Handle;
+    my $fh = IO::Handle->new();
 
     open $fh, "nix-store --export `nix-store -qR @storePaths` | gzip |";
 
diff --git a/src/lib/Hydra/View/NixLog.pm b/src/lib/Hydra/View/NixLog.pm
index 8103726d..fb9e0e1f 100644
--- a/src/lib/Hydra/View/NixLog.pm
+++ b/src/lib/Hydra/View/NixLog.pm
@@ -11,7 +11,7 @@ sub process {
 
     $c->response->content_type('text/plain; charset=utf-8');
 
-    my $fh = new IO::Handle;
+    my $fh = IO::Handle->new();
 
     my $tail = int($c->stash->{tail} // "0");
 
diff --git a/src/lib/Hydra/View/NixNAR.pm b/src/lib/Hydra/View/NixNAR.pm
index 350ee8e9..e1798275 100644
--- a/src/lib/Hydra/View/NixNAR.pm
+++ b/src/lib/Hydra/View/NixNAR.pm
@@ -13,7 +13,7 @@ sub process {
 
     $c->response->content_type('application/x-nix-archive'); # !!! check MIME type
 
-    my $fh = new IO::Handle;
+    my $fh = IO::Handle->new();
 
     open $fh, "nix-store --dump '$storePath' | pixz -0 $pParam |";