diff --git a/redmine_reporter/client.py b/redmine_reporter/client.py
index 0ed73c5..0564326 100644
--- a/redmine_reporter/client.py
+++ b/redmine_reporter/client.py
@@ -4,7 +4,6 @@ from redminelib import Redmine
 from redminelib.resources import Issue
 
 from .config import Config
-from .utils import get_version
 
 
 def _get_redmine_auth_kwargs() -> Dict[str, Any]:
@@ -54,13 +53,12 @@ def fetch_issues_with_spent_time(
     issue_list_str = ",".join(str(i) for i in issue_ids)
     issues = redmine.issue.filter(issue_id=issue_list_str, status_id="*", sort="project:asc")
 
-    # Сопоставляем задачи с суммарным временем
+    # Сопоставляем задачи с суммарным временем.
+    # Сортировка выполняется в report_builder.build_grouped_report,
+    # здесь оставляем порядок API как есть.
     result = []
     for issue in issues:
         total_hours = spent_time.get(issue.id, 0.0)
         result.append((issue, total_hours))
 
-    # Сортируем по (проект, версия)
-    result.sort(key=lambda x: (str(x[0].project), get_version(x[0])))
-
     return result
diff --git a/redmine_reporter/report_builder.py b/redmine_reporter/report_builder.py
index e3189e1..5c0c75e 100644
--- a/redmine_reporter/report_builder.py
+++ b/redmine_reporter/report_builder.py
@@ -35,7 +35,7 @@ def build_grouped_report(
     """
 
     # Защитная сортировка -- гарантирует корректную группировку независимо от порядка на входе
-    issue_hours = sorted(issue_hours, key=lambda x: (str(x[0].project), get_version(x[0])))
+    issue_hours = sorted(issue_hours, key=lambda x: (str(x[0].project), get_version(x[0]), x[0].id))
 
     rows: List[ReportRow] = []
     prev_project: str = ""
diff --git a/redmine_reporter/utils.py b/redmine_reporter/utils.py
index 5011fd4..3501afd 100644
--- a/redmine_reporter/utils.py
+++ b/redmine_reporter/utils.py
@@ -33,7 +33,8 @@ def get_version(issue) -> str:
     version = getattr(issue, "fixed_version", None)
     if version is None:
         return "<N/A>"
-    return str(version)
+    name = getattr(version, "name", None)
+    return str(name) if name else str(version)
 
 
 def hours_to_human(hours: float) -> str:
diff --git a/tests/test_report_builder.py b/tests/test_report_builder.py
index b3965ee..fa71904 100644
--- a/tests/test_report_builder.py
+++ b/tests/test_report_builder.py
@@ -105,3 +105,15 @@ def test_build_grouped_report_preserves_issue_id_and_subject():
     rows = build_grouped_report(issues)
     assert rows[0]["issue_id"] == 42
     assert rows[0]["subject"] == "Моя задача"
+
+
+def test_build_grouped_report_deterministic_order_within_group():
+    """Задачи в одной группе проект+версия упорядочены по issue.id
+    независимо от порядка на входе (#33)."""
+    issues = [
+        (MockIssue("P", "Task C", "New", "v1.0", 103), 1.0),
+        (MockIssue("P", "Task A", "New", "v1.0", 101), 1.0),
+        (MockIssue("P", "Task B", "New", "v1.0", 102), 1.0),
+    ]
+    rows = build_grouped_report(issues)
+    assert [r["issue_id"] for r in rows] == [101, 102, 103]
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 36bff34..007f149 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -78,3 +78,35 @@ def test_get_version_none_attribute():
         fixed_version = None
 
     assert get_version(MockIssue()) == "<N/A>"
+
+
+def test_get_version_with_redminelib_version_object():
+    """redminelib Version: str() возвращает ID, .name — человекочитаемое имя."""
+
+    class MockVersion:
+        """Имитирует redminelib.resources.Version — str() даёт ID."""
+
+        def __init__(self, vid, name):
+            self.id = vid
+            self.name = name
+
+        def __str__(self):
+            return str(self.id)
+
+    class MockIssue:
+        fixed_version = MockVersion(42, "v2.5.0")
+
+    assert get_version(MockIssue()) == "v2.5.0"
+
+
+def test_get_version_falls_back_to_str_when_no_name():
+    """Если у объекта версии нет .name — fallback на str()."""
+
+    class MockVersionNoName:
+        def __str__(self):
+            return "fallback-id"
+
+    class MockIssue:
+        fixed_version = MockVersionNoName()
+
+    assert get_version(MockIssue()) == "fallback-id"