diff --git a/routers/api/v1/repo/file.go b/routers/api/v1/repo/file.go
index 065d6bf8b2..46dce95929 100644
--- a/routers/api/v1/repo/file.go
+++ b/routers/api/v1/repo/file.go
@@ -257,7 +257,9 @@ func GetArchive(ctx *context.APIContext) {
 	// ---
 	// summary: Get an archive of a repository
 	// produces:
-	// - application/json
+	// - application/octet-stream
+	// - application/zip
+	// - application/gzip
 	// parameters:
 	// - name: owner
 	//   in: path
@@ -337,7 +339,17 @@ func download(ctx *context.APIContext, archiveName string, archiver *repo_model.
 	}
 	defer fr.Close()
 
+	contentType := ""
+	switch archiver.Type {
+	case git.ZIP:
+		contentType = "application/zip"
+	case git.TARGZ:
+		// Per RFC6713.
+		contentType = "application/gzip"
+	}
+
 	ctx.ServeContent(fr, &context.ServeHeaderOptions{
+		ContentType:  contentType,
 		Filename:     downloadName,
 		LastModified: archiver.CreatedUnix.AsLocalTime(),
 	})
diff --git a/templates/swagger/v1_json.tmpl b/templates/swagger/v1_json.tmpl
index 453d8b0809..a09f580e97 100644
--- a/templates/swagger/v1_json.tmpl
+++ b/templates/swagger/v1_json.tmpl
@@ -3533,7 +3533,9 @@
     "/repos/{owner}/{repo}/archive/{archive}": {
       "get": {
         "produces": [
-          "application/json"
+          "application/octet-stream",
+          "application/zip",
+          "application/gzip"
         ],
         "tags": [
           "repository"
diff --git a/tests/integration/api_repo_archive_test.go b/tests/integration/api_repo_archive_test.go
index 57d3abfe84..c574d49450 100644
--- a/tests/integration/api_repo_archive_test.go
+++ b/tests/integration/api_repo_archive_test.go
@@ -32,18 +32,21 @@ func TestAPIDownloadArchive(t *testing.T) {
 	bs, err := io.ReadAll(resp.Body)
 	assert.NoError(t, err)
 	assert.Len(t, bs, 320)
+	assert.EqualValues(t, "application/zip", resp.Header().Get("Content-Type"))
 
 	link, _ = url.Parse(fmt.Sprintf("/api/v1/repos/%s/%s/archive/master.tar.gz", user2.Name, repo.Name))
 	resp = MakeRequest(t, NewRequest(t, "GET", link.String()).AddTokenAuth(token), http.StatusOK)
 	bs, err = io.ReadAll(resp.Body)
 	assert.NoError(t, err)
 	assert.Len(t, bs, 266)
+	assert.EqualValues(t, "application/gzip", resp.Header().Get("Content-Type"))
 
 	link, _ = url.Parse(fmt.Sprintf("/api/v1/repos/%s/%s/archive/master.bundle", user2.Name, repo.Name))
 	resp = MakeRequest(t, NewRequest(t, "GET", link.String()).AddTokenAuth(token), http.StatusOK)
 	bs, err = io.ReadAll(resp.Body)
 	assert.NoError(t, err)
 	assert.Len(t, bs, 382)
+	assert.EqualValues(t, "application/octet-stream", resp.Header().Get("Content-Type"))
 
 	link, _ = url.Parse(fmt.Sprintf("/api/v1/repos/%s/%s/archive/master", user2.Name, repo.Name))
 	MakeRequest(t, NewRequest(t, "GET", link.String()).AddTokenAuth(token), http.StatusBadRequest)