diff --git a/src/main/java/com/crowdin/cli/commands/actions/UploadSourcesAction.java b/src/main/java/com/crowdin/cli/commands/actions/UploadSourcesAction.java
index b298d3fd..05da1b20 100644
--- a/src/main/java/com/crowdin/cli/commands/actions/UploadSourcesAction.java
+++ b/src/main/java/com/crowdin/cli/commands/actions/UploadSourcesAction.java
@@ -17,6 +17,7 @@
 import com.crowdin.client.languages.model.Language;
 import com.crowdin.client.projectsgroups.model.Type;
 import com.crowdin.client.sourcefiles.model.*;
+import com.crowdin.client.sourcestrings.model.UploadStringsProgress;
 import com.crowdin.client.sourcestrings.model.UploadStringsRequest;
 import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
@@ -316,7 +317,31 @@ public void act(Outputter out, PropertiesWithFiles pb, ProjectClient client) {
                                         String.format(RESOURCE_BUNDLE.getString("error.upload_to_storage"), sourceFile.getAbsolutePath()));
                                 }
                                 try {
-                                    client.addSourceStringsBased(request);
+                                    ConsoleSpinner.execute(
+                                        out,
+                                        "message.spinner.uploading_strings",
+                                        "message.spinner.upload_strings_failed",
+                                        this.plainView,
+                                        this.plainView,
+                                        () -> {
+                                            UploadStringsProgress uploadStrings = client.addSourceStringsBased(request);
+                                            String uploadId = uploadStrings.getIdentifier();
+
+                                            while (!"finished".equalsIgnoreCase(uploadStrings.getStatus())) {
+                                                ConsoleSpinner.update(
+                                                        String.format(RESOURCE_BUNDLE.getString("message.spinner.uploading_strings_percents"),
+                                                                uploadStrings.getProgress()));
+                                                Thread.sleep(1000);
+
+                                                uploadStrings = client.getUploadStringsStatus(uploadId);
+
+                                                if ("failed".equalsIgnoreCase(uploadStrings.getStatus())) {
+                                                    throw new RuntimeException(RESOURCE_BUNDLE.getString("message.spinner.upload_strings_failed"));
+                                                }
+                                            }
+                                            ConsoleSpinner.update(String.format(RESOURCE_BUNDLE.getString("message.spinner.uploading_strings_percents"), 100));
+                                            return uploadStrings;
+                                        });
                                 } catch (Exception e) {
                                     errorsPresented.set(true);
                                     throw ExitCodeExceptionMapper.remap(e, String.format(RESOURCE_BUNDLE.getString("error.uploading_file"), fileFullPath));
diff --git a/src/test/java/com/crowdin/cli/commands/actions/UploadSourcesActionTest.java b/src/test/java/com/crowdin/cli/commands/actions/UploadSourcesActionTest.java
index 7085a54c..ed1f7413 100644
--- a/src/test/java/com/crowdin/cli/commands/actions/UploadSourcesActionTest.java
+++ b/src/test/java/com/crowdin/cli/commands/actions/UploadSourcesActionTest.java
@@ -27,6 +27,7 @@
 import com.crowdin.client.sourcefiles.model.SpreadsheetFileImportOptions;
 import com.crowdin.client.sourcefiles.model.UpdateFileRequest;
 import com.crowdin.client.sourcestrings.model.ImportOptions;
+import com.crowdin.client.sourcestrings.model.UploadStringsProgress;
 import com.crowdin.client.sourcestrings.model.UploadStringsRequest;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
@@ -797,10 +798,20 @@ public void testUploadOneSource_StringBasedProject() throws ResponseException {
         ProjectClient client = mock(ProjectClient.class);
         CrowdinProjectFull build = ProjectBuilder.emptyProject(Long.parseLong(pb.getProjectId())).addBranches(2L, "main").build();
         build.setType(Type.STRINGS_BASED);
+        UploadStringsRequest uploadStringsRequest = new UploadStringsRequest() {
+            {
+                setStorageId(1L);
+                setBranchId(2L);
+                setImportOptions(new ImportOptions());
+            }};
+        UploadStringsProgress uploadStringsProgress = new UploadStringsProgress();
+        uploadStringsProgress.setIdentifier("testid");
+        uploadStringsProgress.setStatus("finished");
         when(client.downloadFullProject())
             .thenReturn(build);
         when(client.uploadStorage(eq("first.po"), any()))
             .thenReturn(1L);
+        when(client.addSourceStringsBased(eq(uploadStringsRequest))).thenReturn(uploadStringsProgress);
 
         NewAction<PropertiesWithFiles, ProjectClient> action = new UploadSourcesAction("main", false, false, true, false, false);
         action.act(Outputter.getDefault(), pb, client);
@@ -808,12 +819,6 @@ public void testUploadOneSource_StringBasedProject() throws ResponseException {
         verify(client).downloadFullProject();
         verify(client).listLabels();
         verify(client).uploadStorage(eq("first.po"), any());
-        UploadStringsRequest uploadStringsRequest = new UploadStringsRequest() {
-            {
-                setStorageId(1L);
-                setBranchId(2L);
-                setImportOptions(new ImportOptions());
-        }};
         verify(client).addSourceStringsBased(eq(uploadStringsRequest));
         verifyNoMoreInteractions(client);
     }