diff --git a/openapi/normalize_spec.py b/openapi/normalize_spec.py
index 7601463..48558b3 100644
--- a/openapi/normalize_spec.py
+++ b/openapi/normalize_spec.py
@@ -450,6 +450,27 @@ def add_image_upload_body(spec):
         }
 
 
+def naive_deploy_datetimes(spec):
+    """Type deploy timestamps as plain strings.
+
+    The spec declares ``deploy.started_at``/``ended_at`` as ``format:
+    date-time`` with RFC 3339 examples, but the live API returns naive
+    timestamps without a UTC offset (e.g. ``2026-07-04T05:43:00``). The
+    generated ``chrono::DateTime<FixedOffset>`` fields then fail
+    deserialization with "premature end of input". Dropping the format yields
+    ``String`` fields that survive both shapes; ISO-ordered strings still sort
+    chronologically.
+    """
+
+    deploy = spec.get("components", {}).get("schemas", {}).get("deploy")
+    if not isinstance(deploy, dict):
+        return
+    for name in ("started_at", "ended_at"):
+        prop = deploy.get("properties", {}).get(name)
+        if isinstance(prop, dict):
+            prop.pop("format", None)
+
+
 def normalize(spec):
     """Apply all normalization passes to ``spec`` in place and return it."""
     fix_path_parameters(spec)
@@ -464,6 +485,7 @@ def normalize(spec):
     nullable_vpc_optional_fields(spec)
     integer_id_fields(spec)
     add_image_upload_body(spec)
+    naive_deploy_datetimes(spec)
     return spec
 
 
diff --git a/src/models/deploy.rs b/src/models/deploy.rs
index 8710a94..6f6ee20 100644
--- a/src/models/deploy.rs
+++ b/src/models/deploy.rs
@@ -25,10 +25,10 @@ pub struct Deploy {
     pub id:         uuid::Uuid,
     /// Время запуска деплоя.
     #[serde(rename = "started_at")]
-    pub started_at: chrono::DateTime<chrono::FixedOffset>,
+    pub started_at: String,
     /// Время окончания деплоя. Определено для завершенных деплоев
     #[serde(rename = "ended_at", deserialize_with = "Option::deserialize")]
-    pub ended_at:   Option<chrono::DateTime<chrono::FixedOffset>>,
+    pub ended_at:   Option<String>,
     #[serde(rename = "status")]
     pub status:     models::DeployStatus,
     /// Сообщение коммита.
@@ -41,8 +41,8 @@ impl Deploy {
         app_id: String,
         commit_sha: String,
         id: uuid::Uuid,
-        started_at: chrono::DateTime<chrono::FixedOffset>,
-        ended_at: Option<chrono::DateTime<chrono::FixedOffset>>,
+        started_at: String,
+        ended_at: Option<String>,
         status: models::DeployStatus,
         commit_msg: String
     ) -> Deploy {
diff --git a/tests/deploy_naive_datetimes.rs b/tests/deploy_naive_datetimes.rs
new file mode 100644
index 0000000..5d5d2fc
--- /dev/null
+++ b/tests/deploy_naive_datetimes.rs
@@ -0,0 +1,45 @@
+// Regression test for naive deploy timestamps.
+//
+// Timeweb's live API returns `started_at`/`ended_at` on
+// `GET /api/v1/apps/{app_id}/deploys` without a UTC offset (e.g.
+// `2026-07-04T05:43:00`), even though the spec declares `format: date-time`
+// with RFC 3339 examples. The generated `Deploy` model must type these
+// fields as plain strings (see
+// `openapi/normalize_spec.py::naive_deploy_datetimes`) so both the naive
+// live shape and the documented RFC 3339 shape deserialize.
+
+use timeweb_rs::models::Deploy;
+
+#[test]
+fn deploy_tolerates_naive_timestamps() {
+    let body = r#"{
+        "app_id": "2e1c50e8-d947-4945-9988-813fa2fd810c",
+        "commit_sha": "d802ac241e84d5740fae66d5f950a8cd2c96e775",
+        "id": "45755624-d25e-4472-a59c-2c0b74ba5242",
+        "started_at": "2026-07-04T05:43:00",
+        "ended_at": "2026-07-04T05:46:32",
+        "status": "success",
+        "commit_msg": "fix: something"
+    }"#;
+
+    let deploy: Deploy = serde_json::from_str(body).expect("naive timestamps must deserialize");
+    assert_eq!(deploy.started_at, "2026-07-04T05:43:00");
+    assert_eq!(deploy.ended_at.as_deref(), Some("2026-07-04T05:46:32"));
+}
+
+#[test]
+fn deploy_tolerates_rfc3339_timestamps_and_null_ended_at() {
+    let body = r#"{
+        "app_id": "2e1c50e8-d947-4945-9988-813fa2fd810c",
+        "commit_sha": "d802ac241e84d5740fae66d5f950a8cd2c96e775",
+        "id": "45755624-d25e-4472-a59c-2c0b74ba5242",
+        "started_at": "2024-07-24T10:38:44.000Z",
+        "ended_at": null,
+        "status": "stopped",
+        "commit_msg": "feat: something else"
+    }"#;
+
+    let deploy: Deploy = serde_json::from_str(body).expect("documented shape must deserialize");
+    assert_eq!(deploy.started_at, "2024-07-24T10:38:44.000Z");
+    assert_eq!(deploy.ended_at, None);
+}