diff --git a/backend/app/models/config.py b/backend/app/models/config.py
index 0aba7be..96890d7 100644
--- a/backend/app/models/config.py
+++ b/backend/app/models/config.py
@@ -1001,8 +1001,7 @@ class ServiceStatusResponse(BaseModel):
     model_config = ConfigDict(strict=True)
 
     online: bool = Field(..., description="Whether fail2ban is reachable via its socket.")
-    version: str | None = Field(default=None, description="fail2ban version string, or None when offline.")
-    bangui_version: str = Field(..., description="BanGUI application version.")
+    version: str | None = Field(default=None, description="BanGUI application version (or None when offline).")
     jail_count: int = Field(default=0, ge=0, description="Number of currently active jails.")
     total_bans: int = Field(default=0, ge=0, description="Aggregated current ban count across all jails.")
     total_failures: int = Field(default=0, ge=0, description="Aggregated current failure count across all jails.")
diff --git a/backend/app/models/server.py b/backend/app/models/server.py
index 9ebcb36..0e572a0 100644
--- a/backend/app/models/server.py
+++ b/backend/app/models/server.py
@@ -24,7 +24,6 @@ class ServerStatusResponse(BaseModel):
     model_config = ConfigDict(strict=True)
 
     status: ServerStatus
-    bangui_version: str = Field(..., description="BanGUI application version.")
 
 
 class ServerSettings(BaseModel):
diff --git a/backend/app/routers/dashboard.py b/backend/app/routers/dashboard.py
index 50492ac..56c3437 100644
--- a/backend/app/routers/dashboard.py
+++ b/backend/app/routers/dashboard.py
@@ -70,7 +70,8 @@ async def get_server_status(
         "server_status",
         ServerStatus(online=False),
     )
-    return ServerStatusResponse(status=cached, bangui_version=__version__)
+    cached.version = __version__
+    return ServerStatusResponse(status=cached)
 
 
 @router.get(
diff --git a/backend/app/services/config_service.py b/backend/app/services/config_service.py
index 6e8e86c..492b154 100644
--- a/backend/app/services/config_service.py
+++ b/backend/app/services/config_service.py
@@ -819,8 +819,7 @@ async def get_service_status(
 
     return ServiceStatusResponse(
         online=server_status.online,
-        version=server_status.version,
-        bangui_version=__version__,
+        version=__version__,
         jail_count=server_status.active_jails,
         total_bans=server_status.total_bans,
         total_failures=server_status.total_failures,
diff --git a/backend/tests/test_regression_500s.py b/backend/tests/test_regression_500s.py
index 18e995e..079e7fe 100644
--- a/backend/tests/test_regression_500s.py
+++ b/backend/tests/test_regression_500s.py
@@ -221,8 +221,8 @@ class TestFilterConfigImports:
 
 
 class TestServiceStatusBanguiVersion:
-    """Bug 4: ``get_service_status`` must include ``bangui_version``
-    in the ``ServiceStatusResponse`` it returns."""
+    """Bug 4: ``get_service_status`` must include application version
+    in the ``version`` field of the ``ServiceStatusResponse``."""
 
     async def test_online_response_contains_bangui_version(self) -> None:
         """The returned model must contain the ``bangui_version`` field."""
@@ -256,11 +256,9 @@ class TestServiceStatusBanguiVersion:
                 probe_fn=AsyncMock(return_value=online_status),
             )
 
-        assert hasattr(result, "bangui_version"), (
-            "ServiceStatusResponse is missing bangui_version — "
-            "Pydantic will raise ValidationError → 500"
+        assert result.version == app.__version__, (
+            "ServiceStatusResponse must expose BanGUI version in version field"
         )
-        assert result.bangui_version == app.__version__
 
     async def test_offline_response_contains_bangui_version(self) -> None:
         """Even when fail2ban is offline, ``bangui_version`` must be present."""
@@ -275,4 +273,4 @@ class TestServiceStatusBanguiVersion:
             probe_fn=AsyncMock(return_value=offline_status),
         )
 
-        assert result.bangui_version == app.__version__
+        assert result.version == app.__version__
diff --git a/backend/tests/test_routers/test_config.py b/backend/tests/test_routers/test_config.py
index 62ce95e..06a7255 100644
--- a/backend/tests/test_routers/test_config.py
+++ b/backend/tests/test_routers/test_config.py
@@ -2001,8 +2001,7 @@ class TestGetServiceStatus:
     def _mock_status(self, online: bool = True) -> ServiceStatusResponse:
         return ServiceStatusResponse(
             online=online,
-            version="1.0.0" if online else None,
-            bangui_version=app.__version__,
+            version=app.__version__,
             jail_count=2 if online else 0,
             total_bans=10 if online else 0,
             total_failures=3 if online else 0,
@@ -2021,7 +2020,7 @@ class TestGetServiceStatus:
         assert resp.status_code == 200
         data = resp.json()
         assert data["online"] is True
-        assert data["bangui_version"] == app.__version__
+        assert data["version"] == app.__version__
         assert data["jail_count"] == 2
         assert data["log_level"] == "INFO"
 
@@ -2035,7 +2034,7 @@ class TestGetServiceStatus:
 
         assert resp.status_code == 200
         data = resp.json()
-        assert data["bangui_version"] == app.__version__
+        assert data["version"] == app.__version__
         assert data["online"] is False
         assert data["log_level"] == "UNKNOWN"
 
diff --git a/backend/tests/test_routers/test_dashboard.py b/backend/tests/test_routers/test_dashboard.py
index 33b3c93..1353bf8 100644
--- a/backend/tests/test_routers/test_dashboard.py
+++ b/backend/tests/test_routers/test_dashboard.py
@@ -153,8 +153,6 @@ class TestDashboardStatus:
         body = response.json()
 
         assert "status" in body
-        assert "bangui_version" in body
-        assert body["bangui_version"] == app.__version__
 
         status = body["status"]
         assert "online" in status
@@ -171,9 +169,8 @@ class TestDashboardStatus:
         body = response.json()
         status = body["status"]
 
-        assert body["bangui_version"] == app.__version__
         assert status["online"] is True
-        assert status["version"] == "1.0.2"
+        assert status["version"] == app.__version__
         assert status["active_jails"] == 2
         assert status["total_bans"] == 10
         assert status["total_failures"] == 5
@@ -187,9 +184,8 @@ class TestDashboardStatus:
         body = response.json()
         status = body["status"]
 
-        assert body["bangui_version"] == app.__version__
         assert status["online"] is False
-        assert status["version"] is None
+        assert status["version"] == app.__version__
         assert status["active_jails"] == 0
         assert status["total_bans"] == 0
         assert status["total_failures"] == 0
diff --git a/backend/tests/test_services/test_config_service.py b/backend/tests/test_services/test_config_service.py
index 167d9d0..521bf47 100644
--- a/backend/tests/test_services/test_config_service.py
+++ b/backend/tests/test_services/test_config_service.py
@@ -752,8 +752,7 @@ class TestGetServiceStatus:
         from app import __version__
 
         assert result.online is True
-        assert result.version == "1.0.0"
-        assert result.bangui_version == __version__
+        assert result.version == __version__
         assert result.jail_count == 2
         assert result.total_bans == 5
         assert result.total_failures == 3
diff --git a/frontend/src/components/ServerStatusBar.tsx b/frontend/src/components/ServerStatusBar.tsx
index aca04bf..df96b87 100644
--- a/frontend/src/components/ServerStatusBar.tsx
+++ b/frontend/src/components/ServerStatusBar.tsx
@@ -70,7 +70,7 @@ const useStyles = makeStyles({
  */
 export function ServerStatusBar(): React.JSX.Element {
   const styles = useStyles();
-  const { status, banguiVersion, loading, error, refresh } = useServerStatus();
+  const { status, loading, error, refresh } = useServerStatus();
 
   const cardStyles = useCardStyles();
 
@@ -98,21 +98,13 @@ export function ServerStatusBar(): React.JSX.Element {
       {/* Version                                                          */}
       {/* ---------------------------------------------------------------- */}
       {status?.version != null && (
-        <Tooltip content="fail2ban daemon version" relationship="description">
+        <Tooltip content="BanGUI version" relationship="description">
           <Text size={200} className={styles.statValue}>
             v{status.version}
           </Text>
         </Tooltip>
       )}
 
-      {banguiVersion != null && (
-        <Tooltip content="BanGUI version" relationship="description">
-          <Badge appearance="filled" size="small">
-            BanGUI v{banguiVersion}
-          </Badge>
-        </Tooltip>
-      )}
-
       {/* ---------------------------------------------------------------- */}
       {/* Stats (only when online)                                         */}
       {/* ---------------------------------------------------------------- */}
diff --git a/frontend/src/components/__tests__/ServerStatusBar.test.tsx b/frontend/src/components/__tests__/ServerStatusBar.test.tsx
index a70ab47..9f3fb38 100644
--- a/frontend/src/components/__tests__/ServerStatusBar.test.tsx
+++ b/frontend/src/components/__tests__/ServerStatusBar.test.tsx
@@ -41,7 +41,6 @@ describe("ServerStatusBar", () => {
   it("shows a spinner while the initial load is in progress", () => {
     mockedUseServerStatus.mockReturnValue({
       status: null,
-      banguiVersion: null,
       loading: true,
       error: null,
       refresh: vi.fn(),
@@ -60,7 +59,6 @@ describe("ServerStatusBar", () => {
         total_bans: 10,
         total_failures: 5,
       },
-      banguiVersion: "1.1.0",
       loading: false,
       error: null,
       refresh: vi.fn(),
@@ -78,7 +76,6 @@ describe("ServerStatusBar", () => {
         total_bans: 0,
         total_failures: 0,
       },
-      banguiVersion: "1.1.0",
       loading: false,
       error: null,
       refresh: vi.fn(),
@@ -96,7 +93,6 @@ describe("ServerStatusBar", () => {
         total_bans: 0,
         total_failures: 0,
       },
-      banguiVersion: "1.2.3",
       loading: false,
       error: null,
       refresh: vi.fn(),
@@ -105,7 +101,7 @@ describe("ServerStatusBar", () => {
     expect(screen.getByText("v1.2.3")).toBeInTheDocument();
   });
 
-  it("renders a BanGUI version badge", () => {
+  it("does not render a separate BanGUI version badge", () => {
     mockedUseServerStatus.mockReturnValue({
       status: {
         online: true,
@@ -114,13 +110,12 @@ describe("ServerStatusBar", () => {
         total_bans: 0,
         total_failures: 0,
       },
-      banguiVersion: "9.9.9",
       loading: false,
       error: null,
       refresh: vi.fn(),
     });
     renderBar();
-    expect(screen.getByText("BanGUI v9.9.9")).toBeInTheDocument();
+    expect(screen.queryByText("BanGUI v9.9.9")).toBeNull();
   });
 
   it("does not render the version element when version is null", () => {
@@ -132,7 +127,6 @@ describe("ServerStatusBar", () => {
         total_bans: 0,
         total_failures: 0,
       },
-      banguiVersion: "1.2.3",
       loading: false,
       error: null,
       refresh: vi.fn(),
@@ -151,7 +145,6 @@ describe("ServerStatusBar", () => {
         total_bans: 21,
         total_failures: 99,
       },
-      banguiVersion: "1.0.0",
       loading: false,
       error: null,
       refresh: vi.fn(),
@@ -167,7 +160,6 @@ describe("ServerStatusBar", () => {
   it("renders an error message when the status fetch fails", () => {
     mockedUseServerStatus.mockReturnValue({
       status: null,
-      banguiVersion: null,
       loading: false,
       error: "Network error",
       refresh: vi.fn(),
diff --git a/frontend/src/components/config/ServerHealthSection.tsx b/frontend/src/components/config/ServerHealthSection.tsx
index 039ac0d..65c352e 100644
--- a/frontend/src/components/config/ServerHealthSection.tsx
+++ b/frontend/src/components/config/ServerHealthSection.tsx
@@ -352,12 +352,6 @@ export function ServerHealthSection(): React.JSX.Element {
                   <Text className={styles.statValue}>{status.version}</Text>
                 </div>
               )}
-              {status.bangui_version && (
-                <div className={styles.statCard}>
-                  <Text className={styles.statLabel}>BanGUI</Text>
-                  <Text className={styles.statValue}>{status.bangui_version}</Text>
-                </div>
-              )}
               <div className={styles.statCard}>
                 <Text className={styles.statLabel}>Active Jails</Text>
                 <Text className={styles.statValue}>{status.jail_count}</Text>
diff --git a/frontend/src/components/config/__tests__/ServerHealthSection.test.tsx b/frontend/src/components/config/__tests__/ServerHealthSection.test.tsx
index 45575c9..4faedd9 100644
--- a/frontend/src/components/config/__tests__/ServerHealthSection.test.tsx
+++ b/frontend/src/components/config/__tests__/ServerHealthSection.test.tsx
@@ -15,11 +15,10 @@ describe("ServerHealthSection", () => {
     vi.clearAllMocks();
   });
 
-  it("shows the BanGUI version in the service health panel", async () => {
+  it("shows the version in the service health panel", async () => {
     mockedFetchServiceStatus.mockResolvedValue({
       online: true,
       version: "1.2.3",
-      bangui_version: "1.2.3",
       jail_count: 2,
       total_bans: 5,
       total_failures: 1,
@@ -41,11 +40,11 @@ describe("ServerHealthSection", () => {
       </FluentProvider>,
     );
 
-    // The service health panel should render and include the BanGUI version.
-    const banGuiLabel = await screen.findByText("BanGUI");
-    expect(banGuiLabel).toBeInTheDocument();
+    // The service health panel should render and include the version.
+    const versionLabel = await screen.findByText("Version");
+    expect(versionLabel).toBeInTheDocument();
 
-    const banGuiCard = banGuiLabel.closest("div");
-    expect(banGuiCard).toHaveTextContent("1.2.3");
+    const versionCard = versionLabel.closest("div");
+    expect(versionCard).toHaveTextContent("1.2.3");
   });
 });
diff --git a/frontend/src/hooks/useServerStatus.ts b/frontend/src/hooks/useServerStatus.ts
index 826ccf9..8e2470b 100644
--- a/frontend/src/hooks/useServerStatus.ts
+++ b/frontend/src/hooks/useServerStatus.ts
@@ -18,8 +18,6 @@ const POLL_INTERVAL_MS = 30_000;
 export interface UseServerStatusResult {
   /** The most recent server status snapshot, or `null` before the first fetch. */
   status: ServerStatus | null;
-  /** BanGUI application version string. */
-  banguiVersion: string | null;
   /** Whether a fetch is currently in flight. */
   loading: boolean;
   /** Error message string when the last fetch failed, otherwise `null`. */
@@ -35,7 +33,6 @@ export interface UseServerStatusResult {
  */
 export function useServerStatus(): UseServerStatusResult {
   const [status, setStatus] = useState<ServerStatus | null>(null);
-  const [banguiVersion, setBanguiVersion] = useState<string | null>(null);
   const [loading, setLoading] = useState<boolean>(true);
   const [error, setError] = useState<string | null>(null);
 
@@ -47,7 +44,6 @@ export function useServerStatus(): UseServerStatusResult {
     try {
       const data = await fetchServerStatus();
       setStatus(data.status);
-      setBanguiVersion(data.bangui_version);
       setError(null);
     } catch (err: unknown) {
       handleFetchError(err, setError, "Failed to fetch server status");
@@ -82,5 +78,5 @@ export function useServerStatus(): UseServerStatusResult {
     void doFetch().catch((): void => undefined);
   }, [doFetch]);
 
-  return { status, banguiVersion, loading, error, refresh };
+  return { status, loading, error, refresh };
 }
diff --git a/frontend/src/types/config.ts b/frontend/src/types/config.ts
index ec47f65..0fa796c 100644
--- a/frontend/src/types/config.ts
+++ b/frontend/src/types/config.ts
@@ -659,10 +659,8 @@ export interface Fail2BanLogResponse {
 export interface ServiceStatusResponse {
   /** Whether fail2ban is reachable via its socket. */
   online: boolean;
-  /** fail2ban version string, or null when offline. */
+  /** BanGUI application version (or null when offline). */
   version: string | null;
-  /** BanGUI application version (from the API). */
-  bangui_version: string;
   /** Number of currently active jails. */
   jail_count: number;
   /** Aggregated current ban count across all jails. */
diff --git a/frontend/src/types/server.ts b/frontend/src/types/server.ts
index 272c538..7c9525f 100644
--- a/frontend/src/types/server.ts
+++ b/frontend/src/types/server.ts
@@ -21,6 +21,4 @@ export interface ServerStatus {
 /** Response shape for ``GET /api/dashboard/status``. */
 export interface ServerStatusResponse {
   status: ServerStatus;
-  /** BanGUI application version (from the API). */
-  bangui_version: string;
 }