diff --git a/internal/controller/imagerepository_controller_test.go b/internal/controller/imagerepository_controller_test.go
index fb1af3b6..70039208 100644
--- a/internal/controller/imagerepository_controller_test.go
+++ b/internal/controller/imagerepository_controller_test.go
@@ -145,6 +145,17 @@ func TestImageRepositoryReconciler_setAuthOptions(t *testing.T) {
 		corev1.TLSPrivateKeyKey: clientKeyPEM,
 	}
 
+	testProxySecret := &corev1.Secret{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      "test-proxy-secret",
+			Namespace: testNamespace,
+		},
+		Type: corev1.SecretTypeOpaque,
+		Data: map[string][]byte{
+			"address": []byte("http://proxy.example.com"),
+		},
+	}
+
 	testDeprecatedTLSSecret := &corev1.Secret{}
 	testDeprecatedTLSSecret.Name = testDeprecatedTLSSecretName
 	testDeprecatedTLSSecret.Namespace = testNamespace
@@ -249,8 +260,28 @@ func TestImageRepositoryReconciler_setAuthOptions(t *testing.T) {
 			wantErr: true,
 		},
 		{
-			name:     "secret ref and cert secret ref",
-			mockObjs: []client.Object{testSecret, testTLSSecret},
+			name:     "proxy secret ref with existing secret",
+			mockObjs: []client.Object{testProxySecret},
+			imageRepoSpec: imagev1.ImageRepositorySpec{
+				Image: testImg,
+				ProxySecretRef: &meta.LocalObjectReference{
+					Name: testProxySecret.Name,
+				},
+			},
+		},
+		{
+			name: "proxy secret ref with non-existing secret",
+			imageRepoSpec: imagev1.ImageRepositorySpec{
+				Image: testImg,
+				ProxySecretRef: &meta.LocalObjectReference{
+					Name: "non-existing-secret",
+				},
+			},
+			wantErr: true,
+		},
+		{
+			name:     "secret, cert secret and proxy secret refs",
+			mockObjs: []client.Object{testSecret, testTLSSecret, testProxySecret},
 			imageRepoSpec: imagev1.ImageRepositorySpec{
 				Image: testImg,
 				SecretRef: &meta.LocalObjectReference{
@@ -259,6 +290,9 @@ func TestImageRepositoryReconciler_setAuthOptions(t *testing.T) {
 				CertSecretRef: &meta.LocalObjectReference{
 					Name: testTLSSecretName,
 				},
+				ProxySecretRef: &meta.LocalObjectReference{
+					Name: testProxySecret.Name,
+				},
 			},
 		},
 		{