diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90b29a88..fbccc79d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -39,6 +39,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 - [#92](https://github.com/thanos-io/objstore/pull/92) GCS: Allow using a gRPC client.
 - [#94](https://github.com/thanos-io/objstore/pull/94) Allow timingReadCloser to be seeker 
 - [#96](https://github.com/thanos-io/objstore/pull/96) Allow nopCloserWithObjectSize to be seeker
+- [#86](https://github.com/thanos-io/objstore/pull/86) GCS: Add HTTP Config to GCS
 
 ### Changed
 - [#38](https://github.com/thanos-io/objstore/pull/38) *: Upgrade minio-go version to `v7.0.45`.
diff --git a/exthttp/transport.go b/exthttp/transport.go
index d9a807fd..92f86a11 100644
--- a/exthttp/transport.go
+++ b/exthttp/transport.go
@@ -11,6 +11,16 @@ import (
 	"github.com/prometheus/common/model"
 )
 
+var DefaultHTTPConfig = HTTPConfig{
+	IdleConnTimeout:       model.Duration(90 * time.Second),
+	ResponseHeaderTimeout: model.Duration(2 * time.Minute),
+	TLSHandshakeTimeout:   model.Duration(10 * time.Second),
+	ExpectContinueTimeout: model.Duration(1 * time.Second),
+	MaxIdleConns:          100,
+	MaxIdleConnsPerHost:   100,
+	MaxConnsPerHost:       0,
+}
+
 // HTTPConfig stores the http.Transport configuration for the cos and s3 minio client.
 type HTTPConfig struct {
 	IdleConnTimeout       model.Duration `yaml:"idle_conn_timeout"`
diff --git a/providers/gcs/gcs.go b/providers/gcs/gcs.go
index 1d717b77..1b9c78c2 100644
--- a/providers/gcs/gcs.go
+++ b/providers/gcs/gcs.go
@@ -8,9 +8,11 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"net/http"
 	"runtime"
 	"strings"
 	"testing"
+	"time"
 
 	"cloud.google.com/go/storage"
 	"github.com/go-kit/log"
@@ -19,17 +21,23 @@ import (
 	"golang.org/x/oauth2/google"
 	"google.golang.org/api/iterator"
 	"google.golang.org/api/option"
+	htransport "google.golang.org/api/transport/http"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 	"gopkg.in/yaml.v2"
 
 	"github.com/thanos-io/objstore"
+	"github.com/thanos-io/objstore/exthttp"
 )
 
 // DirDelim is the delimiter used to model a directory structure in an object store bucket.
 const DirDelim = "/"
 
+var DefaultConfig = Config{
+	HTTPConfig: exthttp.DefaultHTTPConfig,
+}
+
 // Config stores the configuration for gcs bucket.
 type Config struct {
 	Bucket         string `yaml:"bucket"`
@@ -39,7 +47,8 @@ type Config struct {
 	// when direct path is not enabled.
 	// See https://pkg.go.dev/cloud.google.com/go/storage#hdr-Experimental_gRPC_API for more details
 	// on how to enable direct path.
-	GRPCConnPoolSize int `yaml:"grpc_conn_pool_size"`
+	GRPCConnPoolSize int                `yaml:"grpc_conn_pool_size"`
+	HTTPConfig       exthttp.HTTPConfig `yaml:"http_config"`
 }
 
 // Bucket implements the store.Bucket and shipper.Bucket interfaces against GCS.
@@ -51,14 +60,23 @@ type Bucket struct {
 	closer io.Closer
 }
 
+// parseConfig unmarshals a buffer into a Config with default values.
+func parseConfig(conf []byte) (Config, error) {
+	config := DefaultConfig
+	if err := yaml.UnmarshalStrict(conf, &config); err != nil {
+		return Config{}, err
+	}
+
+	return config, nil
+}
+
 // NewBucket returns a new Bucket against the given bucket handle.
 func NewBucket(ctx context.Context, logger log.Logger, conf []byte, component string) (*Bucket, error) {
-	var gc Config
-	if err := yaml.Unmarshal(conf, &gc); err != nil {
+	config, err := parseConfig(conf)
+	if err != nil {
 		return nil, err
 	}
-
-	return NewBucketWithConfig(ctx, logger, gc, component)
+	return NewBucketWithConfig(ctx, logger, config, component)
 }
 
 // NewBucketWithConfig returns a new Bucket with gcs Config struct.
@@ -76,12 +94,38 @@ func NewBucketWithConfig(ctx context.Context, logger log.Logger, gc Config, comp
 			return nil, errors.Wrap(err, "failed to create credentials from JSON")
 		}
 		opts = append(opts, option.WithCredentials(credentials))
+	} else {
+		opts = append(opts, option.WithoutAuthentication())
 	}
 
 	opts = append(opts,
 		option.WithUserAgent(fmt.Sprintf("thanos-%s/%s (%s)", component, version.Version, runtime.Version())),
 	)
 
+	// Check if a roundtripper has been set in the config
+	// otherwise build the default transport.
+	var rt http.RoundTripper
+	if gc.HTTPConfig.Transport != nil {
+		rt = gc.HTTPConfig.Transport
+	} else {
+		var err error
+		rt, err = exthttp.DefaultTransport(gc.HTTPConfig)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	gRT, err := htransport.NewTransport(context.Background(), rt, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	httpCli := &http.Client{
+		Transport: gRT,
+		Timeout:   time.Duration(gc.HTTPConfig.IdleConnTimeout),
+	}
+	opts = append(opts, option.WithHTTPClient(httpCli))
+
 	return newBucket(ctx, logger, gc, opts)
 }
 
diff --git a/providers/gcs/gcs_test.go b/providers/gcs/gcs_test.go
index 283de6b6..95e0b005 100644
--- a/providers/gcs/gcs_test.go
+++ b/providers/gcs/gcs_test.go
@@ -10,9 +10,11 @@ import (
 	"net/http/httptest"
 	"os"
 	"testing"
+	"time"
 
 	"github.com/efficientgo/core/testutil"
 	"github.com/go-kit/log"
+	"github.com/prometheus/common/model"
 )
 
 func TestBucket_Get_ShouldReturnErrorIfServerTruncateResponse(t *testing.T) {
@@ -44,3 +46,58 @@ func TestBucket_Get_ShouldReturnErrorIfServerTruncateResponse(t *testing.T) {
 	testutil.NotOk(t, err)
 	testutil.Equals(t, "storage: partial request not satisfied", err.Error())
 }
+
+func TestParseConfig_HTTPConfig(t *testing.T) {
+	for _, tc := range []struct {
+		name       string
+		input      string
+		assertions func(cfg Config)
+	}{
+		{
+			name:  "DefaultHTTPConfig",
+			input: `bucket: abcd`,
+			assertions: func(cfg Config) {
+				testutil.Equals(t, cfg.HTTPConfig.IdleConnTimeout, model.Duration(90*time.Second))
+				testutil.Equals(t, cfg.HTTPConfig.ResponseHeaderTimeout, model.Duration(2*time.Minute))
+				testutil.Equals(t, cfg.HTTPConfig.InsecureSkipVerify, false)
+			},
+		},
+		{
+			name: "CustomHTTPConfig",
+			input: `bucket: abcd
+http_config:
+  insecure_skip_verify: true
+  idle_conn_timeout: 50s
+  response_header_timeout: 1m`,
+			assertions: func(cfg Config) {
+				testutil.Equals(t, cfg.HTTPConfig.IdleConnTimeout, model.Duration(50*time.Second))
+				testutil.Equals(t, cfg.HTTPConfig.ResponseHeaderTimeout, model.Duration(1*time.Minute))
+				testutil.Equals(t, cfg.HTTPConfig.InsecureSkipVerify, true)
+			},
+		},
+		{
+			name: "CustomHTTPConfigWithTLS",
+			input: `bucket: abcd
+http_config:
+  tls_config:
+    ca_file: /certs/ca.crt
+    cert_file: /certs/cert.crt
+    key_file: /certs/key.key
+    server_name: server
+    insecure_skip_verify: false`,
+			assertions: func(cfg Config) {
+				testutil.Equals(t, "/certs/ca.crt", cfg.HTTPConfig.TLSConfig.CAFile)
+				testutil.Equals(t, "/certs/cert.crt", cfg.HTTPConfig.TLSConfig.CertFile)
+				testutil.Equals(t, "/certs/key.key", cfg.HTTPConfig.TLSConfig.KeyFile)
+				testutil.Equals(t, "server", cfg.HTTPConfig.TLSConfig.ServerName)
+				testutil.Equals(t, false, cfg.HTTPConfig.TLSConfig.InsecureSkipVerify)
+			},
+		},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			cfg, err := parseConfig([]byte(tc.input))
+			testutil.Ok(t, err)
+			tc.assertions(cfg)
+		})
+	}
+}
diff --git a/providers/s3/s3.go b/providers/s3/s3.go
index 507b550b..72130034 100644
--- a/providers/s3/s3.go
+++ b/providers/s3/s3.go
@@ -14,7 +14,6 @@ import (
 	"strconv"
 	"strings"
 	"testing"
-	"time"
 
 	"github.com/efficientgo/core/logerrcapture"
 	"github.com/go-kit/log"
@@ -23,7 +22,6 @@ import (
 	"github.com/minio/minio-go/v7/pkg/credentials"
 	"github.com/minio/minio-go/v7/pkg/encrypt"
 	"github.com/pkg/errors"
-	"github.com/prometheus/common/model"
 	"github.com/prometheus/common/version"
 	"gopkg.in/yaml.v2"
 
@@ -101,16 +99,8 @@ const (
 )
 
 var DefaultConfig = Config{
-	PutUserMetadata: map[string]string{},
-	HTTPConfig: exthttp.HTTPConfig{
-		IdleConnTimeout:       model.Duration(90 * time.Second),
-		ResponseHeaderTimeout: model.Duration(2 * time.Minute),
-		TLSHandshakeTimeout:   model.Duration(10 * time.Second),
-		ExpectContinueTimeout: model.Duration(1 * time.Second),
-		MaxIdleConns:          100,
-		MaxIdleConnsPerHost:   100,
-		MaxConnsPerHost:       0,
-	},
+	PutUserMetadata:  map[string]string{},
+	HTTPConfig:       exthttp.DefaultHTTPConfig,
 	PartSize:         1024 * 1024 * 64, // 64MB.
 	BucketLookupType: AutoLookup,
 	SendContentMd5:   true, // Default to using MD5.