diff --git a/internal/arduino/cores/packagemanager/package_manager.go b/internal/arduino/cores/packagemanager/package_manager.go
index d24ee377606..deb14931053 100644
--- a/internal/arduino/cores/packagemanager/package_manager.go
+++ b/internal/arduino/cores/packagemanager/package_manager.go
@@ -124,6 +124,7 @@ func (pmb *Builder) Build() *PackageManager {
 		profile:                        pmb.profile,
 		discoveryManager:               pmb.discoveryManager,
 		userAgent:                      pmb.userAgent,
+		downloaderConfig:               pmb.downloaderConfig,
 	}
 }
 
diff --git a/internal/arduino/cores/packagemanager/package_manager_test.go b/internal/arduino/cores/packagemanager/package_manager_test.go
index 92530af6dc3..daef6987191 100644
--- a/internal/arduino/cores/packagemanager/package_manager_test.go
+++ b/internal/arduino/cores/packagemanager/package_manager_test.go
@@ -17,6 +17,7 @@ package packagemanager
 
 import (
 	"fmt"
+	"net/http"
 	"net/url"
 	"os"
 	"runtime"
@@ -29,6 +30,7 @@ import (
 	"github.com/arduino/go-properties-orderedmap"
 	"github.com/stretchr/testify/require"
 	"go.bug.st/downloader/v2"
+	"go.bug.st/f"
 	semver "go.bug.st/relaxed-semver"
 )
 
@@ -1025,3 +1027,20 @@ func TestRunScript(t *testing.T) {
 		})
 	}
 }
+
+func TestCorrectlyUsesDownloaderConfig(t *testing.T) {
+	proxyURL := f.Must(url.Parse("http://proxy:test@test.test/404:42"))
+
+	downloaderCfg := downloader.Config{
+		HttpClient: http.Client{
+			Transport: &http.Transport{
+				Proxy: http.ProxyURL(proxyURL),
+			},
+			Timeout: 123,
+		},
+	}
+	pmb := NewBuilder(customHardware, customHardware, nil, customHardware, customHardware, "test", downloaderCfg)
+	pmb.LoadHardwareFromDirectory(customHardware)
+	pm := pmb.Build()
+	require.Equal(t, downloaderCfg, pm.downloaderConfig)
+}