diff --git a/cmd/hub/main.go b/cmd/hub/main.go
index aacaeee9..14b0fbae 100644
--- a/cmd/hub/main.go
+++ b/cmd/hub/main.go
@@ -72,7 +72,7 @@ func main() {
 		ImageStore:          pg.NewImageStore(cfg, db, hc),
 		Authorizer:          az,
 		HTTPClient:          hc,
-		OCIPuller:           &oci.Puller{},
+		OCIPuller:           oci.NewPuller(cfg),
 		ViewsTracker:        vt,
 	}
 	h, err := handlers.Setup(ctx, cfg, hSvc)
diff --git a/cmd/tracker/main.go b/cmd/tracker/main.go
index 379da98a..4bbbb80c 100644
--- a/cmd/tracker/main.go
+++ b/cmd/tracker/main.go
@@ -82,7 +82,7 @@ func main() {
 		Oe:                 &repo.OLMOCIExporter{},
 		Ec:                 ec,
 		Hc:                 hc,
-		Op:                 &oci.Puller{},
+		Op:                 oci.NewPuller(cfg),
 		Is:                 is,
 		SetupTrackerSource: tracker.SetupSource,
 	}
diff --git a/internal/oci/oci.go b/internal/oci/oci.go
index 98f497cb..4250ac9c 100644
--- a/internal/oci/oci.go
+++ b/internal/oci/oci.go
@@ -15,6 +15,7 @@ import (
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 	csremote "github.com/sigstore/cosign/pkg/oci/remote"
 	"github.com/sigstore/cosign/pkg/types"
+	"github.com/spf13/viper"
 	"oras.land/oras-go/pkg/content"
 	ctxo "oras.land/oras-go/pkg/context"
 	"oras.land/oras-go/pkg/oras"
@@ -31,18 +32,31 @@ var (
 )
 
 // Puller is a hub.OCIPuller implementation.
-type Puller struct{}
+type Puller struct {
+	cfg *viper.Viper
+}
+
+// NewPuller creates a new Puller instance.
+func NewPuller(cfg *viper.Viper) *Puller {
+	return &Puller{
+		cfg: cfg,
+	}
+}
 
 // PullLayer pulls the first layer of the media type provided from the OCI
 // artifact at the given reference.
 func (p *Puller) PullLayer(
 	ctx context.Context,
-	ref,
+	imageRef,
 	mediaType,
 	username,
 	password string,
 ) (ocispec.Descriptor, []byte, error) {
 	// Pull layers available at the ref provided
+	ref, err := name.ParseReference(imageRef)
+	if err != nil {
+		return ocispec.Descriptor{}, nil, err
+	}
 	resolverOptions := docker.ResolverOptions{}
 	if username != "" || password != "" {
 		resolverOptions.Authorizer = docker.NewDockerAuthorizer(
@@ -50,14 +64,20 @@ func (p *Puller) PullLayer(
 				return username, password, nil
 			}),
 		)
+	} else if p.cfg != nil && strings.HasSuffix(ref.Context().Registry.Name(), "docker.io") {
+		resolverOptions.Authorizer = docker.NewDockerAuthorizer(
+			docker.WithAuthCreds(func(string) (string, string, error) {
+				return p.cfg.GetString("creds.dockerUsername"), p.cfg.GetString("creds.dockerPassword"), nil
+			}),
+		)
 	}
 	registryStore := content.Registry{Resolver: docker.NewResolver(resolverOptions)}
 	memoryStore := content.NewMemory()
 	var layers []ocispec.Descriptor
-	_, err := oras.Copy(
+	_, err = oras.Copy(
 		ctxo.WithLoggerDiscarded(ctx),
 		registryStore,
-		ref,
+		ref.String(),
 		memoryStore,
 		"",
 		oras.WithPullEmptyNameAllowed(),
@@ -84,7 +104,16 @@ func (p *Puller) PullLayer(
 }
 
 // SignatureChecker is a hub.OCISignatureChecker implementation.
-type SignatureChecker struct{}
+type SignatureChecker struct {
+	op hub.OCIPuller
+}
+
+// NewSignatureChecker creates a new Puller instance.
+func NewSignatureChecker(op hub.OCIPuller) *SignatureChecker {
+	return &SignatureChecker{
+		op: op,
+	}
+}
 
 // HasCosignSignature checks if the OCI artifact identified by the reference
 // provided has a cosign (sigstore) signature.
@@ -105,8 +134,7 @@ func (c *SignatureChecker) HasCosignSignature(
 	}
 
 	// Check if the OCI artifact exists and contains a signature layer
-	p := &Puller{}
-	_, _, err = p.PullLayer(ctx, signatureRef.String(), types.SimpleSigningMediaType, username, password)
+	_, _, err = c.op.PullLayer(ctx, signatureRef.String(), types.SimpleSigningMediaType, username, password)
 	if err != nil {
 		if errors.Is(err, ErrArtifactNotFound) || errors.Is(err, ErrLayerNotFound) {
 			return false, nil
diff --git a/internal/repo/manager.go b/internal/repo/manager.go
index 87ab63aa..f2c6b451 100644
--- a/internal/repo/manager.go
+++ b/internal/repo/manager.go
@@ -120,7 +120,7 @@ func NewManager(
 		db:  db,
 		il:  &HelmIndexLoader{},
 		tg:  &oci.TagsGetter{},
-		op:  &oci.Puller{},
+		op:  oci.NewPuller(cfg),
 		az:  az,
 		hc:  hc,
 	}
diff --git a/internal/tracker/helpers_test.go b/internal/tracker/helpers_test.go
index 4b037589..4b36d89e 100644
--- a/internal/tracker/helpers_test.go
+++ b/internal/tracker/helpers_test.go
@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	"github.com/artifacthub/hub/internal/hub"
+	"github.com/artifacthub/hub/internal/oci"
 	"github.com/artifacthub/hub/internal/repo"
 	"github.com/artifacthub/hub/internal/tests"
 	"github.com/spf13/viper"
@@ -235,6 +236,9 @@ func TestSetupSource(t *testing.T) {
 
 			i := &hub.TrackerSourceInput{
 				Repository: tc.r,
+				Svc: &hub.TrackerSourceServices{
+					Op: &oci.PullerMock{},
+				},
 			}
 			source := SetupSource(i)
 			assert.Equal(t, tc.expectedType, reflect.TypeOf(source).String())
diff --git a/internal/tracker/source/container/container.go b/internal/tracker/source/container/container.go
index f38ffb7e..50cb43a3 100644
--- a/internal/tracker/source/container/container.go
+++ b/internal/tracker/source/container/container.go
@@ -91,7 +91,7 @@ func NewTrackerSource(i *hub.TrackerSourceInput, opts ...func(s *TrackerSource))
 		o(s)
 	}
 	if s.sc == nil {
-		s.sc = &oci.SignatureChecker{}
+		s.sc = oci.NewSignatureChecker(i.Svc.Op)
 	}
 	return s
 }
diff --git a/internal/tracker/source/helm/helm.go b/internal/tracker/source/helm/helm.go
index 432f4578..615f7367 100644
--- a/internal/tracker/source/helm/helm.go
+++ b/internal/tracker/source/helm/helm.go
@@ -102,7 +102,7 @@ func NewTrackerSource(i *hub.TrackerSourceInput, opts ...func(s *TrackerSource))
 		s.il = &repo.HelmIndexLoader{}
 	}
 	if s.sc == nil {
-		s.sc = &oci.SignatureChecker{}
+		s.sc = oci.NewSignatureChecker(i.Svc.Op)
 	}
 	if s.tg == nil {
 		s.tg = &oci.TagsGetter{}
@@ -426,7 +426,7 @@ func LoadChartArchive(ctx context.Context, u *url.URL, o *LoadChartArchiveOption
 	case "oci":
 		op := o.Op
 		if op == nil {
-			op = &oci.Puller{}
+			op = oci.NewPuller(nil)
 		}
 		ref := strings.TrimPrefix(u.String(), hub.RepositoryOCIPrefix)
 		_, data, err := op.PullLayer(ctx, ref, ChartContentLayerMediaType, o.Username, o.Password)