diff --git a/flytectl/cmd/register/register_util.go b/flytectl/cmd/register/register_util.go
index 1cdc7893c5..cc0130d7dd 100644
--- a/flytectl/cmd/register/register_util.go
+++ b/flytectl/cmd/register/register_util.go
@@ -46,6 +46,12 @@ const registrationVersionPattern = "{{ registration.version }}"
 // Additional variable define in fast serialized proto that needs to be replace in registration time
 const registrationRemotePackagePattern = "{{ .remote_package_path }}"
 
+// All supported extensions for compress
+var supportedExtensions = []string{".tar", ".tgz", ".tar.gz"}
+
+// All supported extensions for gzip compress
+var validGzipExtensions = []string{".tgz", ".tar.gz"}
+
 type Result struct {
 	Name   string
 	Status string
@@ -445,15 +451,14 @@ func registerFile(ctx context.Context, fileName, sourceCode string, registerResu
 func getArchiveReaderCloser(ctx context.Context, ref string) (io.ReadCloser, error) {
 	dataRef := storage.DataReference(ref)
 	scheme, _, key, err := dataRef.Split()
-	segments := strings.Split(key, ".")
-	ext := segments[len(segments)-1]
 	if err != nil {
 		return nil, err
 	}
 	var dataRefReaderCloser io.ReadCloser
 
-	if ext != "tar" && ext != "tgz" {
-		return nil, errors.New("only .tar and .tgz extension archives are supported")
+	isValid, extension := checkSupportedExtensionForCompress(key)
+	if !isValid {
+		return nil, errors.New("only .tar, .tar.gz and .tgz extension archives are supported")
 	}
 
 	if scheme == "http" || scheme == "https" {
@@ -464,9 +469,13 @@ func getArchiveReaderCloser(ctx context.Context, ref string) (io.ReadCloser, err
 	if err != nil {
 		return nil, err
 	}
-	if ext == "tgz" {
-		if dataRefReaderCloser, err = gzip.NewReader(dataRefReaderCloser); err != nil {
-			return nil, err
+
+	for _, ext := range validGzipExtensions {
+		if ext == extension {
+			if dataRefReaderCloser, err = gzip.NewReader(dataRefReaderCloser); err != nil {
+				return nil, err
+			}
+			break
 		}
 	}
 	return dataRefReaderCloser, err
@@ -486,7 +495,8 @@ func getJSONSpec(message proto.Message) string {
 func filterExampleFromRelease(releases github.RepositoryRelease) []github.ReleaseAsset {
 	var assets []github.ReleaseAsset
 	for _, v := range releases.Assets {
-		if strings.HasSuffix(*v.Name, ".tgz") {
+		isValid, _ := checkSupportedExtensionForCompress(*v.Name)
+		if isValid {
 			assets = append(assets, v)
 		}
 	}
@@ -604,3 +614,12 @@ func deprecatedCheck(ctx context.Context) {
 		rconfig.DefaultFilesConfig.K8sServiceAccount = rconfig.DefaultFilesConfig.K8ServiceAccount
 	}
 }
+
+func checkSupportedExtensionForCompress(file string) (bool, string) {
+	for _, extension := range supportedExtensions {
+		if strings.HasSuffix(file, extension) {
+			return true, extension
+		}
+	}
+	return false, ""
+}
diff --git a/flytectl/cmd/register/register_util_test.go b/flytectl/cmd/register/register_util_test.go
index 4963ebe4b3..7f784776b3 100644
--- a/flytectl/cmd/register/register_util_test.go
+++ b/flytectl/cmd/register/register_util_test.go
@@ -163,7 +163,7 @@ func TestGetSortedArchivedInvalidArchiveFileList(t *testing.T) {
 	assert.Equal(t, 0, len(fileList))
 	assert.True(t, strings.HasPrefix(tmpDir, "/tmp/register"))
 	assert.NotNil(t, err)
-	assert.Equal(t, errors.New("only .tar and .tgz extension archives are supported"), err)
+	assert.Equal(t, errors.New("only .tar, .tar.gz and .tgz extension archives are supported"), err)
 	// Clean up the temp directory.
 	assert.Nil(t, os.RemoveAll(tmpDir), "unable to delete temp dir %v", tmpDir)
 }