diff --git a/pyproject.toml b/pyproject.toml
index c6f20d662..5cceee68b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ dependencies = [
     "python-multipart>=0.0.16",
     "filelock",
     "psutil",
-    "gpuhunt==0.1.10",
+    "gpuhunt==0.1.11",
     "argcomplete>=3.5.0",
     "ignore-python>=0.2.0",
     "orjson",
diff --git a/src/dstack/_internal/core/backends/base/offers.py b/src/dstack/_internal/core/backends/base/offers.py
index 0efb569e2..00269217c 100644
--- a/src/dstack/_internal/core/backends/base/offers.py
+++ b/src/dstack/_internal/core/backends/base/offers.py
@@ -24,6 +24,7 @@
     "lambda-arm",
     "gcp-a4",
     "gcp-g4-preview",
+    "gcp-dws-calendar-mode",
 ]
 
 
@@ -94,6 +95,7 @@ def catalog_item_to_offer(
         ),
         region=item.location,
         price=item.price,
+        backend_data=item.provider_data,
     )
 
 
diff --git a/src/dstack/_internal/core/backends/gcp/compute.py b/src/dstack/_internal/core/backends/gcp/compute.py
index 7069b3f18..3fb4fb7b3 100644
--- a/src/dstack/_internal/core/backends/gcp/compute.py
+++ b/src/dstack/_internal/core/backends/gcp/compute.py
@@ -90,6 +90,10 @@
 TPU_VERSIONS = [tpu.name for tpu in KNOWN_TPUS]
 
 
+class GCPOfferBackendData(CoreModel):
+    is_dws_calendar_mode: bool = False
+
+
 class GCPVolumeDiskBackendData(CoreModel):
     type: Literal["disk"] = "disk"
     disk_type: str
@@ -202,6 +206,23 @@ def reservation_modifier(
         modifiers.append(get_offers_disk_modifier(CONFIGURABLE_DISK_SIZE, requirements))
         return modifiers
 
+    def get_offers_post_filter(
+        self, requirements: Requirements
+    ) -> Optional[Callable[[InstanceOfferWithAvailability], bool]]:
+        if requirements.reservation is None:
+
+            def reserved_offers_filter(offer: InstanceOfferWithAvailability) -> bool:
+                """Remove reserved-only offers"""
+                if GCPOfferBackendData.__response__.parse_obj(
+                    offer.backend_data
+                ).is_dws_calendar_mode:
+                    return False
+                return True
+
+            return reserved_offers_filter
+
+        return None
+
     def terminate_instance(
         self, instance_id: str, region: str, backend_data: Optional[str] = None
     ) -> None:
diff --git a/src/dstack/_internal/core/compatibility/runs.py b/src/dstack/_internal/core/compatibility/runs.py
index a7ce3c63c..403009ae0 100644
--- a/src/dstack/_internal/core/compatibility/runs.py
+++ b/src/dstack/_internal/core/compatibility/runs.py
@@ -49,10 +49,20 @@ def get_apply_plan_excludes(plan: ApplyRunPlanInput) -> Optional[IncludeExcludeD
             job_submissions_excludes["job_provisioning_data"] = {
                 "instance_type": {"resources": {"cpu_arch"}}
             }
+        jrd_offer_excludes = {}
+        if any(
+            js.job_runtime_data and js.job_runtime_data.offer for js in job_submissions
+        ) and all(
+            not js.job_runtime_data
+            or not js.job_runtime_data.offer
+            or not js.job_runtime_data.offer.backend_data
+            for js in job_submissions
+        ):
+            jrd_offer_excludes["backend_data"] = True
         if all(map(_should_exclude_job_submission_jrd_cpu_arch, job_submissions)):
-            job_submissions_excludes["job_runtime_data"] = {
-                "offer": {"instance": {"resources": {"cpu_arch"}}}
-            }
+            jrd_offer_excludes["instance"] = {"resources": {"cpu_arch"}}
+        if jrd_offer_excludes:
+            job_submissions_excludes["job_runtime_data"] = {"offer": jrd_offer_excludes}
         if all(js.exit_status is None for js in job_submissions):
             job_submissions_excludes["exit_status"] = True
         if all(js.status_message == "" for js in job_submissions):
@@ -71,9 +81,18 @@ def get_apply_plan_excludes(plan: ApplyRunPlanInput) -> Optional[IncludeExcludeD
                 latest_job_submission_excludes["job_provisioning_data"] = {
                     "instance_type": {"resources": {"cpu_arch"}}
                 }
+            latest_job_submission_jrd_offer_excludes = {}
+            if (
+                latest_job_submission.job_runtime_data
+                and latest_job_submission.job_runtime_data.offer
+                and not latest_job_submission.job_runtime_data.offer.backend_data
+            ):
+                latest_job_submission_jrd_offer_excludes["backend_data"] = True
             if _should_exclude_job_submission_jrd_cpu_arch(latest_job_submission):
+                latest_job_submission_jrd_offer_excludes["instance"] = {"resources": {"cpu_arch"}}
+            if latest_job_submission_jrd_offer_excludes:
                 latest_job_submission_excludes["job_runtime_data"] = {
-                    "offer": {"instance": {"resources": {"cpu_arch"}}}
+                    "offer": latest_job_submission_jrd_offer_excludes
                 }
             if latest_job_submission.exit_status is None:
                 latest_job_submission_excludes["exit_status"] = True
diff --git a/src/dstack/_internal/core/models/instances.py b/src/dstack/_internal/core/models/instances.py
index f1f802d54..204b423c1 100644
--- a/src/dstack/_internal/core/models/instances.py
+++ b/src/dstack/_internal/core/models/instances.py
@@ -1,6 +1,6 @@
 import datetime
 from enum import Enum
-from typing import Dict, List, Optional
+from typing import Any, Dict, List, Optional
 from uuid import UUID
 
 import gpuhunt
@@ -184,6 +184,7 @@ class InstanceOffer(CoreModel):
     instance: InstanceType
     region: str
     price: float
+    backend_data: dict[str, Any] = {}
 
 
 class InstanceOfferWithAvailability(InstanceOffer):
diff --git a/src/dstack/_internal/server/services/offers.py b/src/dstack/_internal/server/services/offers.py
index be0b54bd8..1b2525449 100644
--- a/src/dstack/_internal/server/services/offers.py
+++ b/src/dstack/_internal/server/services/offers.py
@@ -215,6 +215,7 @@ def generate_shared_offer(
         ),
         region=offer.region,
         price=offer.price,
+        backend_data=offer.backend_data,
         availability=offer.availability,
         blocks=blocks,
         total_blocks=total_blocks,